Home / 31,842.36-47,755.35-13,127.72

Finding the Fourth Proportional to 31,842.36, 47,755.35 and 13,127.72

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Solution

The fourth proportional to 31,842.36, 47,755.35 and 13,127.72 is: 19,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,842.36 : 47,755.35 = 13,127.72 : x
  2. Step 2: Convert to fraction form
    31,842.36/47,755.35 = 13,127.72/x
  3. Step 3: Cross multiply
    31,842.36x = 47,755.35 × 13,127.72
  4. Step 4: Simplify right side
    31,842.36x = 626,918,624.53
  5. Step 5: Solve for x
    x = 626,918,624.53/31,842.36
  6. Step 6: Final answer
    x = 19,688.20

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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.