Home / 42,311.16-63,467.20-20,126.80

Finding the Fourth Proportional to 42,311.16, 63,467.20 and 20,126.80

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Solution

The fourth proportional to 42,311.16, 63,467.20 and 20,126.80 is: 30,190.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,311.16 : 63,467.20 = 20,126.80 : x
  2. Step 2: Convert to fraction form
    42,311.16/63,467.20 = 20,126.80/x
  3. Step 3: Cross multiply
    42,311.16x = 63,467.20 × 20,126.80
  4. Step 4: Simplify right side
    42,311.16x = 1,277,391,640.96
  5. Step 5: Solve for x
    x = 1,277,391,640.96/42,311.16
  6. Step 6: Final answer
    x = 30,190.42

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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.