Home / 13,748.32-20,621.30-4,387.96

Finding the Fourth Proportional to 13,748.32, 20,621.30 and 4,387.96

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Solution

The fourth proportional to 13,748.32, 20,621.30 and 4,387.96 is: 6,581.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,748.32 : 20,621.30 = 4,387.96 : x
  2. Step 2: Convert to fraction form
    13,748.32/20,621.30 = 4,387.96/x
  3. Step 3: Cross multiply
    13,748.32x = 20,621.30 × 4,387.96
  4. Step 4: Simplify right side
    13,748.32x = 90,485,439.55
  5. Step 5: Solve for x
    x = 90,485,439.55/13,748.32
  6. Step 6: Final answer
    x = 6,581.56

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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.