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Finding the Fourth Proportional to 30,400.92, 45,610.20 and 15,620.40

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Solution

The fourth proportional to 30,400.92, 45,610.20 and 15,620.40 is: 23,435.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,400.92 : 45,610.20 = 15,620.40 : x
  2. Step 2: Convert to fraction form
    30,400.92/45,610.20 = 15,620.40/x
  3. Step 3: Cross multiply
    30,400.92x = 45,610.20 × 15,620.40
  4. Step 4: Simplify right side
    30,400.92x = 712,449,568.08
  5. Step 5: Solve for x
    x = 712,449,568.08/30,400.92
  6. Step 6: Final answer
    x = 23,435.13

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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.