Home / 28,657.17-39,545.12-15,909.62

Finding the Fourth Proportional to 28,657.17, 39,545.12 and 15,909.62

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Solution

The fourth proportional to 28,657.17, 39,545.12 and 15,909.62 is: 21,954.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.17 : 39,545.12 = 15,909.62 : x
  2. Step 2: Convert to fraction form
    28,657.17/39,545.12 = 15,909.62/x
  3. Step 3: Cross multiply
    28,657.17x = 39,545.12 × 15,909.62
  4. Step 4: Simplify right side
    28,657.17x = 629,147,554.78
  5. Step 5: Solve for x
    x = 629,147,554.78/28,657.17
  6. Step 6: Final answer
    x = 21,954.28

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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.