Home / 21,232.56-31,836.65-8,761.17

Finding the Fourth Proportional to 21,232.56, 31,836.65 and 8,761.17

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Solution

The fourth proportional to 21,232.56, 31,836.65 and 8,761.17 is: 13,136.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,232.56 : 31,836.65 = 8,761.17 : x
  2. Step 2: Convert to fraction form
    21,232.56/31,836.65 = 8,761.17/x
  3. Step 3: Cross multiply
    21,232.56x = 31,836.65 × 8,761.17
  4. Step 4: Simplify right side
    21,232.56x = 278,926,259.07
  5. Step 5: Solve for x
    x = 278,926,259.07/21,232.56
  6. Step 6: Final answer
    x = 13,136.72

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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.