Home / 31,561.80-47,359.26-11,853.96

Finding the Fourth Proportional to 31,561.80, 47,359.26 and 11,853.96

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Solution

The fourth proportional to 31,561.80, 47,359.26 and 11,853.96 is: 17,787.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,561.80 : 47,359.26 = 11,853.96 : x
  2. Step 2: Convert to fraction form
    31,561.80/47,359.26 = 11,853.96/x
  3. Step 3: Cross multiply
    31,561.80x = 47,359.26 × 11,853.96
  4. Step 4: Simplify right side
    31,561.80x = 561,394,773.67
  5. Step 5: Solve for x
    x = 561,394,773.67/31,561.80
  6. Step 6: Final answer
    x = 17,787.16

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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.