Home / 31,385.52-47,090.40-13,842.96

Finding the Fourth Proportional to 31,385.52, 47,090.40 and 13,842.96

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Solution

The fourth proportional to 31,385.52, 47,090.40 and 13,842.96 is: 20,769.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,385.52 : 47,090.40 = 13,842.96 : x
  2. Step 2: Convert to fraction form
    31,385.52/47,090.40 = 13,842.96/x
  3. Step 3: Cross multiply
    31,385.52x = 47,090.40 × 13,842.96
  4. Step 4: Simplify right side
    31,385.52x = 651,870,523.58
  5. Step 5: Solve for x
    x = 651,870,523.58/31,385.52
  6. Step 6: Final answer
    x = 20,769.79

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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.