Home / 12,407.28-17,115.12-7,623.91

Finding the Fourth Proportional to 12,407.28, 17,115.12 and 7,623.91

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Solution

The fourth proportional to 12,407.28, 17,115.12 and 7,623.91 is: 10,516.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,407.28 : 17,115.12 = 7,623.91 : x
  2. Step 2: Convert to fraction form
    12,407.28/17,115.12 = 7,623.91/x
  3. Step 3: Cross multiply
    12,407.28x = 17,115.12 × 7,623.91
  4. Step 4: Simplify right side
    12,407.28x = 130,484,081.08
  5. Step 5: Solve for x
    x = 130,484,081.08/12,407.28
  6. Step 6: Final answer
    x = 10,516.73

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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.