Home / 31,348.89-47,008.76-12,621.69

Finding the Fourth Proportional to 31,348.89, 47,008.76 and 12,621.69

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Solution

The fourth proportional to 31,348.89, 47,008.76 and 12,621.69 is: 18,926.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,348.89 : 47,008.76 = 12,621.69 : x
  2. Step 2: Convert to fraction form
    31,348.89/47,008.76 = 12,621.69/x
  3. Step 3: Cross multiply
    31,348.89x = 47,008.76 × 12,621.69
  4. Step 4: Simplify right side
    31,348.89x = 593,329,932.90
  5. Step 5: Solve for x
    x = 593,329,932.90/31,348.89
  6. Step 6: Final answer
    x = 18,926.66

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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.