Home / 42,480.08-63,728.16-20,295.20

Finding the Fourth Proportional to 42,480.08, 63,728.16 and 20,295.20

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Solution

The fourth proportional to 42,480.08, 63,728.16 and 20,295.20 is: 30,446.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,480.08 : 63,728.16 = 20,295.20 : x
  2. Step 2: Convert to fraction form
    42,480.08/63,728.16 = 20,295.20/x
  3. Step 3: Cross multiply
    42,480.08x = 63,728.16 × 20,295.20
  4. Step 4: Simplify right side
    42,480.08x = 1,293,375,752.83
  5. Step 5: Solve for x
    x = 1,293,375,752.83/42,480.08
  6. Step 6: Final answer
    x = 30,446.64

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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.