Home / 21,217.56-29,280.25-11,658.06

Finding the Fourth Proportional to 21,217.56, 29,280.25 and 11,658.06

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Solution

The fourth proportional to 21,217.56, 29,280.25 and 11,658.06 is: 16,088.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.56 : 29,280.25 = 11,658.06 : x
  2. Step 2: Convert to fraction form
    21,217.56/29,280.25 = 11,658.06/x
  3. Step 3: Cross multiply
    21,217.56x = 29,280.25 × 11,658.06
  4. Step 4: Simplify right side
    21,217.56x = 341,350,882.17
  5. Step 5: Solve for x
    x = 341,350,882.17/21,217.56
  6. Step 6: Final answer
    x = 16,088.13

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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.