Home / 12,342.38-18,553.67-9,903.88

Finding the Fourth Proportional to 12,342.38, 18,553.67 and 9,903.88

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Solution

The fourth proportional to 12,342.38, 18,553.67 and 9,903.88 is: 14,887.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,342.38 : 18,553.67 = 9,903.88 : x
  2. Step 2: Convert to fraction form
    12,342.38/18,553.67 = 9,903.88/x
  3. Step 3: Cross multiply
    12,342.38x = 18,553.67 × 9,903.88
  4. Step 4: Simplify right side
    12,342.38x = 183,753,262.48
  5. Step 5: Solve for x
    x = 183,753,262.48/12,342.38
  6. Step 6: Final answer
    x = 14,887.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.