Home / 11,389.11-17,087.76-8,127.74

Finding the Fourth Proportional to 11,389.11, 17,087.76 and 8,127.74

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Solution

The fourth proportional to 11,389.11, 17,087.76 and 8,127.74 is: 12,194.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.11 : 17,087.76 = 8,127.74 : x
  2. Step 2: Convert to fraction form
    11,389.11/17,087.76 = 8,127.74/x
  3. Step 3: Cross multiply
    11,389.11x = 17,087.76 × 8,127.74
  4. Step 4: Simplify right side
    11,389.11x = 138,884,913.18
  5. Step 5: Solve for x
    x = 138,884,913.18/11,389.11
  6. Step 6: Final answer
    x = 12,194.54

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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.