Home / 20,299.56-30,437.20-8,439.04

Finding the Fourth Proportional to 20,299.56, 30,437.20 and 8,439.04

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Solution

The fourth proportional to 20,299.56, 30,437.20 and 8,439.04 is: 12,653.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.56 : 30,437.20 = 8,439.04 : x
  2. Step 2: Convert to fraction form
    20,299.56/30,437.20 = 8,439.04/x
  3. Step 3: Cross multiply
    20,299.56x = 30,437.20 × 8,439.04
  4. Step 4: Simplify right side
    20,299.56x = 256,860,748.29
  5. Step 5: Solve for x
    x = 256,860,748.29/20,299.56
  6. Step 6: Final answer
    x = 12,653.51

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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.