Home / 28,753.60-39,578.88-25,720.96

Finding the Fourth Proportional to 28,753.60, 39,578.88 and 25,720.96

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Solution

The fourth proportional to 28,753.60, 39,578.88 and 25,720.96 is: 35,404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,753.60 : 39,578.88 = 25,720.96 : x
  2. Step 2: Convert to fraction form
    28,753.60/39,578.88 = 25,720.96/x
  3. Step 3: Cross multiply
    28,753.60x = 39,578.88 × 25,720.96
  4. Step 4: Simplify right side
    28,753.60x = 1,018,006,789.32
  5. Step 5: Solve for x
    x = 1,018,006,789.32/28,753.60
  6. Step 6: Final answer
    x = 35,404.50

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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.