Home / 28,561.52-39,414.95-15,640.74

Finding the Fourth Proportional to 28,561.52, 39,414.95 and 15,640.74

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Solution

The fourth proportional to 28,561.52, 39,414.95 and 15,640.74 is: 21,584.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,561.52 : 39,414.95 = 15,640.74 : x
  2. Step 2: Convert to fraction form
    28,561.52/39,414.95 = 15,640.74/x
  3. Step 3: Cross multiply
    28,561.52x = 39,414.95 × 15,640.74
  4. Step 4: Simplify right side
    28,561.52x = 616,478,906.86
  5. Step 5: Solve for x
    x = 616,478,906.86/28,561.52
  6. Step 6: Final answer
    x = 21,584.25

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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.