Home / 10,425.38-14,378.85-9,231.64

Finding the Fourth Proportional to 10,425.38, 14,378.85 and 9,231.64

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Solution

The fourth proportional to 10,425.38, 14,378.85 and 9,231.64 is: 12,732.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,425.38 : 14,378.85 = 9,231.64 : x
  2. Step 2: Convert to fraction form
    10,425.38/14,378.85 = 9,231.64/x
  3. Step 3: Cross multiply
    10,425.38x = 14,378.85 × 9,231.64
  4. Step 4: Simplify right side
    10,425.38x = 132,740,330.87
  5. Step 5: Solve for x
    x = 132,740,330.87/10,425.38
  6. Step 6: Final answer
    x = 12,732.43

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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.