Home / 31,455.87-47,149.69-15,672.68

Finding the Fourth Proportional to 31,455.87, 47,149.69 and 15,672.68

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Solution

The fourth proportional to 31,455.87, 47,149.69 and 15,672.68 is: 23,492.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.87 : 47,149.69 = 15,672.68 : x
  2. Step 2: Convert to fraction form
    31,455.87/47,149.69 = 15,672.68/x
  3. Step 3: Cross multiply
    31,455.87x = 47,149.69 × 15,672.68
  4. Step 4: Simplify right side
    31,455.87x = 738,962,003.47
  5. Step 5: Solve for x
    x = 738,962,003.47/31,455.87
  6. Step 6: Final answer
    x = 23,492.02

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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.