Home / 57,621.20-86,431.80-13,845.20

Finding the Fourth Proportional to 57,621.20, 86,431.80 and 13,845.20

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Solution

The fourth proportional to 57,621.20, 86,431.80 and 13,845.20 is: 20,767.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,621.20 : 86,431.80 = 13,845.20 : x
  2. Step 2: Convert to fraction form
    57,621.20/86,431.80 = 13,845.20/x
  3. Step 3: Cross multiply
    57,621.20x = 86,431.80 × 13,845.20
  4. Step 4: Simplify right side
    57,621.20x = 1,196,665,125.20
  5. Step 5: Solve for x
    x = 1,196,665,125.20/57,621.20
  6. Step 6: Final answer
    x = 20,767.79

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Similar ratio
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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.