Home / 21,143,013,705.81-29,169,101,324.03-12,105,942,461.01

Finding the Fourth Proportional to 21,143,013,705.81, 29,169,101,324.03 and 12,105,942,461.01

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Solution

The fourth proportional to 21,143,013,705.81, 29,169,101,324.03 and 12,105,942,461.01 is: 16,701,472,513.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143,013,705.81 : 29,169,101,324.03 = 12,105,942,461.01 : x
  2. Step 2: Convert to fraction form
    21,143,013,705.81/29,169,101,324.03 = 12,105,942,461.01/x
  3. Step 3: Cross multiply
    21,143,013,705.81x = 29,169,101,324.03 × 12,105,942,461.01
  4. Step 4: Simplify right side
    21,143,013,705.81x = 353,119,462,268,017,311,744
  5. Step 5: Solve for x
    x = 353,119,462,268,017,311,744/21,143,013,705.81
  6. Step 6: Final answer
    x = 16,701,472,513.87

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.