Home / 20,657.17-28,500.15-12,041.38

Finding the Fourth Proportional to 20,657.17, 28,500.15 and 12,041.38

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Solution

The fourth proportional to 20,657.17, 28,500.15 and 12,041.38 is: 16,613.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.17 : 28,500.15 = 12,041.38 : x
  2. Step 2: Convert to fraction form
    20,657.17/28,500.15 = 12,041.38/x
  3. Step 3: Cross multiply
    20,657.17x = 28,500.15 × 12,041.38
  4. Step 4: Simplify right side
    20,657.17x = 343,181,216.99
  5. Step 5: Solve for x
    x = 343,181,216.99/20,657.17
  6. Step 6: Final answer
    x = 16,613.18

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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.