Home / 30,301.20-45,431.28-15,481.44

Finding the Fourth Proportional to 30,301.20, 45,431.28 and 15,481.44

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Solution

The fourth proportional to 30,301.20, 45,431.28 and 15,481.44 is: 23,211.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,301.20 : 45,431.28 = 15,481.44 : x
  2. Step 2: Convert to fraction form
    30,301.20/45,431.28 = 15,481.44/x
  3. Step 3: Cross multiply
    30,301.20x = 45,431.28 × 15,481.44
  4. Step 4: Simplify right side
    30,301.20x = 703,341,635.44
  5. Step 5: Solve for x
    x = 703,341,635.44/30,301.20
  6. Step 6: Final answer
    x = 23,211.68

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1.5x scale

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.