Home / 18,966.24-28,446.12-5,112

Finding the Fourth Proportional to 18,966.24, 28,446.12 and 5,112

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Solution

The fourth proportional to 18,966.24, 28,446.12 and 5,112 is: 7,667.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,966.24 : 28,446.12 = 5,112 : x
  2. Step 2: Convert to fraction form
    18,966.24/28,446.12 = 5,112/x
  3. Step 3: Cross multiply
    18,966.24x = 28,446.12 × 5,112
  4. Step 4: Simplify right side
    18,966.24x = 145,416,565.44
  5. Step 5: Solve for x
    x = 145,416,565.44/18,966.24
  6. Step 6: Final answer
    x = 7,667.13

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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.