Home / 10,172.97-15,191.58-7,956.81

Finding the Fourth Proportional to 10,172.97, 15,191.58 and 7,956.81

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Solution

The fourth proportional to 10,172.97, 15,191.58 and 7,956.81 is: 11,882.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,172.97 : 15,191.58 = 7,956.81 : x
  2. Step 2: Convert to fraction form
    10,172.97/15,191.58 = 7,956.81/x
  3. Step 3: Cross multiply
    10,172.97x = 15,191.58 × 7,956.81
  4. Step 4: Simplify right side
    10,172.97x = 120,876,515.66
  5. Step 5: Solve for x
    x = 120,876,515.66/10,172.97
  6. Step 6: Final answer
    x = 11,882.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.