Home / 31,842.72-47,733.20-12,115.68

Finding the Fourth Proportional to 31,842.72, 47,733.20 and 12,115.68

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Solution

The fourth proportional to 31,842.72, 47,733.20 and 12,115.68 is: 18,161.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,842.72 : 47,733.20 = 12,115.68 : x
  2. Step 2: Convert to fraction form
    31,842.72/47,733.20 = 12,115.68/x
  3. Step 3: Cross multiply
    31,842.72x = 47,733.20 × 12,115.68
  4. Step 4: Simplify right side
    31,842.72x = 578,320,176.58
  5. Step 5: Solve for x
    x = 578,320,176.58/31,842.72
  6. Step 6: Final answer
    x = 18,161.77

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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.