Home / 42,202.12-63,302.62-12,620.20

Finding the Fourth Proportional to 42,202.12, 63,302.62 and 12,620.20

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Solution

The fourth proportional to 42,202.12, 63,302.62 and 12,620.20 is: 18,930.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,202.12 : 63,302.62 = 12,620.20 : x
  2. Step 2: Convert to fraction form
    42,202.12/63,302.62 = 12,620.20/x
  3. Step 3: Cross multiply
    42,202.12x = 63,302.62 × 12,620.20
  4. Step 4: Simplify right side
    42,202.12x = 798,891,724.92
  5. Step 5: Solve for x
    x = 798,891,724.92/42,202.12
  6. Step 6: Final answer
    x = 18,930.13

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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.