Home / 21,040.70-29,035.76-12,087.99

Finding the Fourth Proportional to 21,040.70, 29,035.76 and 12,087.99

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Solution

The fourth proportional to 21,040.70, 29,035.76 and 12,087.99 is: 16,681.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.70 : 29,035.76 = 12,087.99 : x
  2. Step 2: Convert to fraction form
    21,040.70/29,035.76 = 12,087.99/x
  3. Step 3: Cross multiply
    21,040.70x = 29,035.76 × 12,087.99
  4. Step 4: Simplify right side
    21,040.70x = 350,983,916.08
  5. Step 5: Solve for x
    x = 350,983,916.08/21,040.70
  6. Step 6: Final answer
    x = 16,681.19

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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.