Home / 31,487.56-47,234.80-10,419.92

Finding the Fourth Proportional to 31,487.56, 47,234.80 and 10,419.92

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Solution

The fourth proportional to 31,487.56, 47,234.80 and 10,419.92 is: 15,631.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,487.56 : 47,234.80 = 10,419.92 : x
  2. Step 2: Convert to fraction form
    31,487.56/47,234.80 = 10,419.92/x
  3. Step 3: Cross multiply
    31,487.56x = 47,234.80 × 10,419.92
  4. Step 4: Simplify right side
    31,487.56x = 492,182,837.22
  5. Step 5: Solve for x
    x = 492,182,837.22/31,487.56
  6. Step 6: Final answer
    x = 15,631.02

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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.