Home / 31,691.91-47,539.23-11,972.00

Finding the Fourth Proportional to 31,691.91, 47,539.23 and 11,972.00

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Solution

The fourth proportional to 31,691.91, 47,539.23 and 11,972.00 is: 17,958.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,691.91 : 47,539.23 = 11,972.00 : x
  2. Step 2: Convert to fraction form
    31,691.91/47,539.23 = 11,972.00/x
  3. Step 3: Cross multiply
    31,691.91x = 47,539.23 × 11,972.00
  4. Step 4: Simplify right side
    31,691.91x = 569,139,769.18
  5. Step 5: Solve for x
    x = 569,139,769.18/31,691.91
  6. Step 6: Final answer
    x = 17,958.52

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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.