Home / 21,098.63-29,119.76-12,715.13

Finding the Fourth Proportional to 21,098.63, 29,119.76 and 12,715.13

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Solution

The fourth proportional to 21,098.63, 29,119.76 and 12,715.13 is: 17,549.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.63 : 29,119.76 = 12,715.13 : x
  2. Step 2: Convert to fraction form
    21,098.63/29,119.76 = 12,715.13/x
  3. Step 3: Cross multiply
    21,098.63x = 29,119.76 × 12,715.13
  4. Step 4: Simplify right side
    21,098.63x = 370,261,324.79
  5. Step 5: Solve for x
    x = 370,261,324.79/21,098.63
  6. Step 6: Final answer
    x = 17,549.07

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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.