Home / 28,517.87-39,354.75-15,942.62

Finding the Fourth Proportional to 28,517.87, 39,354.75 and 15,942.62

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Solution

The fourth proportional to 28,517.87, 39,354.75 and 15,942.62 is: 22,000.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.87 : 39,354.75 = 15,942.62 : x
  2. Step 2: Convert to fraction form
    28,517.87/39,354.75 = 15,942.62/x
  3. Step 3: Cross multiply
    28,517.87x = 39,354.75 × 15,942.62
  4. Step 4: Simplify right side
    28,517.87x = 627,417,547.96
  5. Step 5: Solve for x
    x = 627,417,547.96/28,517.87
  6. Step 6: Final answer
    x = 22,000.86

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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.