Home / 12,007.38-18,010.84-5,428.97

Finding the Fourth Proportional to 12,007.38, 18,010.84 and 5,428.97

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Solution

The fourth proportional to 12,007.38, 18,010.84 and 5,428.97 is: 8,143.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.38 : 18,010.84 = 5,428.97 : x
  2. Step 2: Convert to fraction form
    12,007.38/18,010.84 = 5,428.97/x
  3. Step 3: Cross multiply
    12,007.38x = 18,010.84 × 5,428.97
  4. Step 4: Simplify right side
    12,007.38x = 97,780,310.03
  5. Step 5: Solve for x
    x = 97,780,310.03/12,007.38
  6. Step 6: Final answer
    x = 8,143.35

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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.