Home / 15,151.38-20,908.90-8,864.97

Finding the Fourth Proportional to 15,151.38, 20,908.90 and 8,864.97

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Solution

The fourth proportional to 15,151.38, 20,908.90 and 8,864.97 is: 12,233.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,151.38 : 20,908.90 = 8,864.97 : x
  2. Step 2: Convert to fraction form
    15,151.38/20,908.90 = 8,864.97/x
  3. Step 3: Cross multiply
    15,151.38x = 20,908.90 × 8,864.97
  4. Step 4: Simplify right side
    15,151.38x = 185,356,771.23
  5. Step 5: Solve for x
    x = 185,356,771.23/15,151.38
  6. Step 6: Final answer
    x = 12,233.66

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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.