Home / 31,771.68-47,673.59-15,128.61

Finding the Fourth Proportional to 31,771.68, 47,673.59 and 15,128.61

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Solution

The fourth proportional to 31,771.68, 47,673.59 and 15,128.61 is: 22,700.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,771.68 : 47,673.59 = 15,128.61 : x
  2. Step 2: Convert to fraction form
    31,771.68/47,673.59 = 15,128.61/x
  3. Step 3: Cross multiply
    31,771.68x = 47,673.59 × 15,128.61
  4. Step 4: Simplify right side
    31,771.68x = 721,235,074.77
  5. Step 5: Solve for x
    x = 721,235,074.77/31,771.68
  6. Step 6: Final answer
    x = 22,700.56

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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.