Home / 11,615.04-17,423.78-7,691.81

Finding the Fourth Proportional to 11,615.04, 17,423.78 and 7,691.81

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Solution

The fourth proportional to 11,615.04, 17,423.78 and 7,691.81 is: 11,538.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,615.04 : 17,423.78 = 7,691.81 : x
  2. Step 2: Convert to fraction form
    11,615.04/17,423.78 = 7,691.81/x
  3. Step 3: Cross multiply
    11,615.04x = 17,423.78 × 7,691.81
  4. Step 4: Simplify right side
    11,615.04x = 134,020,279.66
  5. Step 5: Solve for x
    x = 134,020,279.66/11,615.04
  6. Step 6: Final answer
    x = 11,538.51

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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.