Home / 28,426.97-39,232.56-16,331.78

Finding the Fourth Proportional to 28,426.97, 39,232.56 and 16,331.78

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Solution

The fourth proportional to 28,426.97, 39,232.56 and 16,331.78 is: 22,539.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.97 : 39,232.56 = 16,331.78 : x
  2. Step 2: Convert to fraction form
    28,426.97/39,232.56 = 16,331.78/x
  3. Step 3: Cross multiply
    28,426.97x = 39,232.56 × 16,331.78
  4. Step 4: Simplify right side
    28,426.97x = 640,737,538.76
  5. Step 5: Solve for x
    x = 640,737,538.76/28,426.97
  6. Step 6: Final answer
    x = 22,539.78

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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.