Home / 12,371.13-18,538.47-9,068.76

Finding the Fourth Proportional to 12,371.13, 18,538.47 and 9,068.76

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Solution

The fourth proportional to 12,371.13, 18,538.47 and 9,068.76 is: 13,589.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,371.13 : 18,538.47 = 9,068.76 : x
  2. Step 2: Convert to fraction form
    12,371.13/18,538.47 = 9,068.76/x
  3. Step 3: Cross multiply
    12,371.13x = 18,538.47 × 9,068.76
  4. Step 4: Simplify right side
    12,371.13x = 168,120,935.20
  5. Step 5: Solve for x
    x = 168,120,935.20/12,371.13
  6. Step 6: Final answer
    x = 13,589.78

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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.