Home / 31,688.60-47,520.14-11,956.41

Finding the Fourth Proportional to 31,688.60, 47,520.14 and 11,956.41

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Solution

The fourth proportional to 31,688.60, 47,520.14 and 11,956.41 is: 17,929.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,688.60 : 47,520.14 = 11,956.41 : x
  2. Step 2: Convert to fraction form
    31,688.60/47,520.14 = 11,956.41/x
  3. Step 3: Cross multiply
    31,688.60x = 47,520.14 × 11,956.41
  4. Step 4: Simplify right side
    31,688.60x = 568,170,217.32
  5. Step 5: Solve for x
    x = 568,170,217.32/31,688.60
  6. Step 6: Final answer
    x = 17,929.80

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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.