Home / 31,380.23-47,060.34-10,315.39

Finding the Fourth Proportional to 31,380.23, 47,060.34 and 10,315.39

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Solution

The fourth proportional to 31,380.23, 47,060.34 and 10,315.39 is: 15,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380.23 : 47,060.34 = 10,315.39 : x
  2. Step 2: Convert to fraction form
    31,380.23/47,060.34 = 10,315.39/x
  3. Step 3: Cross multiply
    31,380.23x = 47,060.34 × 10,315.39
  4. Step 4: Simplify right side
    31,380.23x = 485,445,882.92
  5. Step 5: Solve for x
    x = 485,445,882.92/31,380.23
  6. Step 6: Final answer
    x = 15,469.80

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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.