Home / 23,128.29-31,917.12-12,517.92

Finding the Fourth Proportional to 23,128.29, 31,917.12 and 12,517.92

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Solution

The fourth proportional to 23,128.29, 31,917.12 and 12,517.92 is: 17,274.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,128.29 : 31,917.12 = 12,517.92 : x
  2. Step 2: Convert to fraction form
    23,128.29/31,917.12 = 12,517.92/x
  3. Step 3: Cross multiply
    23,128.29x = 31,917.12 × 12,517.92
  4. Step 4: Simplify right side
    23,128.29x = 399,535,954.79
  5. Step 5: Solve for x
    x = 399,535,954.79/23,128.29
  6. Step 6: Final answer
    x = 17,274.77

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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.