Home / 21,046.55-31,531.52-12,254.81

Finding the Fourth Proportional to 21,046.55, 31,531.52 and 12,254.81

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Solution

The fourth proportional to 21,046.55, 31,531.52 and 12,254.81 is: 18,359.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.55 : 31,531.52 = 12,254.81 : x
  2. Step 2: Convert to fraction form
    21,046.55/31,531.52 = 12,254.81/x
  3. Step 3: Cross multiply
    21,046.55x = 31,531.52 × 12,254.81
  4. Step 4: Simplify right side
    21,046.55x = 386,412,567.68
  5. Step 5: Solve for x
    x = 386,412,567.68/21,046.55
  6. Step 6: Final answer
    x = 18,359.91

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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.