Home / 21,489.26-29,657.89-12,057.76

Finding the Fourth Proportional to 21,489.26, 29,657.89 and 12,057.76

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Solution

The fourth proportional to 21,489.26, 29,657.89 and 12,057.76 is: 16,641.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.26 : 29,657.89 = 12,057.76 : x
  2. Step 2: Convert to fraction form
    21,489.26/29,657.89 = 12,057.76/x
  3. Step 3: Cross multiply
    21,489.26x = 29,657.89 × 12,057.76
  4. Step 4: Simplify right side
    21,489.26x = 357,607,719.73
  5. Step 5: Solve for x
    x = 357,607,719.73/21,489.26
  6. Step 6: Final answer
    x = 16,641.23

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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.