Home / 31,587.48-47,340.24-12,845.70

Finding the Fourth Proportional to 31,587.48, 47,340.24 and 12,845.70

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Solution

The fourth proportional to 31,587.48, 47,340.24 and 12,845.70 is: 19,251.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,587.48 : 47,340.24 = 12,845.70 : x
  2. Step 2: Convert to fraction form
    31,587.48/47,340.24 = 12,845.70/x
  3. Step 3: Cross multiply
    31,587.48x = 47,340.24 × 12,845.70
  4. Step 4: Simplify right side
    31,587.48x = 608,118,520.97
  5. Step 5: Solve for x
    x = 608,118,520.97/31,587.48
  6. Step 6: Final answer
    x = 19,251.88

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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.