Home / 28,305.43-39,061.57-15,559.92

Finding the Fourth Proportional to 28,305.43, 39,061.57 and 15,559.92

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Solution

The fourth proportional to 28,305.43, 39,061.57 and 15,559.92 is: 21,472.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.43 : 39,061.57 = 15,559.92 : x
  2. Step 2: Convert to fraction form
    28,305.43/39,061.57 = 15,559.92/x
  3. Step 3: Cross multiply
    28,305.43x = 39,061.57 × 15,559.92
  4. Step 4: Simplify right side
    28,305.43x = 607,794,904.27
  5. Step 5: Solve for x
    x = 607,794,904.27/28,305.43
  6. Step 6: Final answer
    x = 21,472.73

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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.