Home / 27,872.43-38,463.15-15,125.05

Finding the Fourth Proportional to 27,872.43, 38,463.15 and 15,125.05

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Solution

The fourth proportional to 27,872.43, 38,463.15 and 15,125.05 is: 20,872.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,872.43 : 38,463.15 = 15,125.05 : x
  2. Step 2: Convert to fraction form
    27,872.43/38,463.15 = 15,125.05/x
  3. Step 3: Cross multiply
    27,872.43x = 38,463.15 × 15,125.05
  4. Step 4: Simplify right side
    27,872.43x = 581,757,066.91
  5. Step 5: Solve for x
    x = 581,757,066.91/27,872.43
  6. Step 6: Final answer
    x = 20,872.13

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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.