Home / 11,581.28-15,982.60-7,042.65

Finding the Fourth Proportional to 11,581.28, 15,982.60 and 7,042.65

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Solution

The fourth proportional to 11,581.28, 15,982.60 and 7,042.65 is: 9,719.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,581.28 : 15,982.60 = 7,042.65 : x
  2. Step 2: Convert to fraction form
    11,581.28/15,982.60 = 7,042.65/x
  3. Step 3: Cross multiply
    11,581.28x = 15,982.60 × 7,042.65
  4. Step 4: Simplify right side
    11,581.28x = 112,559,857.89
  5. Step 5: Solve for x
    x = 112,559,857.89/11,581.28
  6. Step 6: Final answer
    x = 9,719.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.