Home / 31,543.30-47,257.54-18,355.68

Finding the Fourth Proportional to 31,543.30, 47,257.54 and 18,355.68

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Solution

The fourth proportional to 31,543.30, 47,257.54 and 18,355.68 is: 27,500.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,543.30 : 47,257.54 = 18,355.68 : x
  2. Step 2: Convert to fraction form
    31,543.30/47,257.54 = 18,355.68/x
  3. Step 3: Cross multiply
    31,543.30x = 47,257.54 × 18,355.68
  4. Step 4: Simplify right side
    31,543.30x = 867,444,281.83
  5. Step 5: Solve for x
    x = 867,444,281.83/31,543.30
  6. Step 6: Final answer
    x = 27,500.11

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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.