Home / 11,170.17-15,392.61-7,974.45

Finding the Fourth Proportional to 11,170.17, 15,392.61 and 7,974.45

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Solution

The fourth proportional to 11,170.17, 15,392.61 and 7,974.45 is: 10,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,170.17 : 15,392.61 = 7,974.45 : x
  2. Step 2: Convert to fraction form
    11,170.17/15,392.61 = 7,974.45/x
  3. Step 3: Cross multiply
    11,170.17x = 15,392.61 × 7,974.45
  4. Step 4: Simplify right side
    11,170.17x = 122,747,598.81
  5. Step 5: Solve for x
    x = 122,747,598.81/11,170.17
  6. Step 6: Final answer
    x = 10,988.87

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Double scale
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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.