Home / 13,142.25-19,712.66-5,357.61

Finding the Fourth Proportional to 13,142.25, 19,712.66 and 5,357.61

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Solution

The fourth proportional to 13,142.25, 19,712.66 and 5,357.61 is: 8,036.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.25 : 19,712.66 = 5,357.61 : x
  2. Step 2: Convert to fraction form
    13,142.25/19,712.66 = 5,357.61/x
  3. Step 3: Cross multiply
    13,142.25x = 19,712.66 × 5,357.61
  4. Step 4: Simplify right side
    13,142.25x = 105,612,717.55
  5. Step 5: Solve for x
    x = 105,612,717.55/13,142.25
  6. Step 6: Final answer
    x = 8,036.12

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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.