Home / 12,432.29-17,155.80-7,126.38

Finding the Fourth Proportional to 12,432.29, 17,155.80 and 7,126.38

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Solution

The fourth proportional to 12,432.29, 17,155.80 and 7,126.38 is: 9,833.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432.29 : 17,155.80 = 7,126.38 : x
  2. Step 2: Convert to fraction form
    12,432.29/17,155.80 = 7,126.38/x
  3. Step 3: Cross multiply
    12,432.29x = 17,155.80 × 7,126.38
  4. Step 4: Simplify right side
    12,432.29x = 122,258,750.00
  5. Step 5: Solve for x
    x = 122,258,750.00/12,432.29
  6. Step 6: Final answer
    x = 9,833.97

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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.