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Finding the Fourth Proportional to 40,003.92, 60,008 and 10,421.84

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Solution

The fourth proportional to 40,003.92, 60,008 and 10,421.84 is: 15,633.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,003.92 : 60,008 = 10,421.84 : x
  2. Step 2: Convert to fraction form
    40,003.92/60,008 = 10,421.84/x
  3. Step 3: Cross multiply
    40,003.92x = 60,008 × 10,421.84
  4. Step 4: Simplify right side
    40,003.92x = 625,393,774.72
  5. Step 5: Solve for x
    x = 625,393,774.72/40,003.92
  6. Step 6: Final answer
    x = 15,633.31

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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.