Home / 47,748.28-71,616.96-12,690.64

Finding the Fourth Proportional to 47,748.28, 71,616.96 and 12,690.64

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Solution

The fourth proportional to 47,748.28, 71,616.96 and 12,690.64 is: 19,034.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,748.28 : 71,616.96 = 12,690.64 : x
  2. Step 2: Convert to fraction form
    47,748.28/71,616.96 = 12,690.64/x
  3. Step 3: Cross multiply
    47,748.28x = 71,616.96 × 12,690.64
  4. Step 4: Simplify right side
    47,748.28x = 908,865,057.25
  5. Step 5: Solve for x
    x = 908,865,057.25/47,748.28
  6. Step 6: Final answer
    x = 19,034.51

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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.