Home / 10,191.36-15,218.01-8,087.76

Finding the Fourth Proportional to 10,191.36, 15,218.01 and 8,087.76

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Solution

The fourth proportional to 10,191.36, 15,218.01 and 8,087.76 is: 12,076.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,191.36 : 15,218.01 = 8,087.76 : x
  2. Step 2: Convert to fraction form
    10,191.36/15,218.01 = 8,087.76/x
  3. Step 3: Cross multiply
    10,191.36x = 15,218.01 × 8,087.76
  4. Step 4: Simplify right side
    10,191.36x = 123,079,612.56
  5. Step 5: Solve for x
    x = 123,079,612.56/10,191.36
  6. Step 6: Final answer
    x = 12,076.86

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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.