Home / 15,186.38-20,957.22-8,898.75

Finding the Fourth Proportional to 15,186.38, 20,957.22 and 8,898.75

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Solution

The fourth proportional to 15,186.38, 20,957.22 and 8,898.75 is: 12,280.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.38 : 20,957.22 = 8,898.75 : x
  2. Step 2: Convert to fraction form
    15,186.38/20,957.22 = 8,898.75/x
  3. Step 3: Cross multiply
    15,186.38x = 20,957.22 × 8,898.75
  4. Step 4: Simplify right side
    15,186.38x = 186,493,061.48
  5. Step 5: Solve for x
    x = 186,493,061.48/15,186.38
  6. Step 6: Final answer
    x = 12,280.29

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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.