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Finding the Fourth Proportional to 37,318.86, 55,978.11 and 15,132.15

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Solution

The fourth proportional to 37,318.86, 55,978.11 and 15,132.15 is: 22,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,318.86 : 55,978.11 = 15,132.15 : x
  2. Step 2: Convert to fraction form
    37,318.86/55,978.11 = 15,132.15/x
  3. Step 3: Cross multiply
    37,318.86x = 55,978.11 × 15,132.15
  4. Step 4: Simplify right side
    37,318.86x = 847,069,157.24
  5. Step 5: Solve for x
    x = 847,069,157.24/37,318.86
  6. Step 6: Final answer
    x = 22,698.15

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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.