Home / 42,400.08-63,621.36-20,207.88

Finding the Fourth Proportional to 42,400.08, 63,621.36 and 20,207.88

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Solution

The fourth proportional to 42,400.08, 63,621.36 and 20,207.88 is: 30,321.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,400.08 : 63,621.36 = 20,207.88 : x
  2. Step 2: Convert to fraction form
    42,400.08/63,621.36 = 20,207.88/x
  3. Step 3: Cross multiply
    42,400.08x = 63,621.36 × 20,207.88
  4. Step 4: Simplify right side
    42,400.08x = 1,285,652,808.32
  5. Step 5: Solve for x
    x = 1,285,652,808.32/42,400.08
  6. Step 6: Final answer
    x = 30,321.94

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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.