Home / 11,151.66-15,389.25-6,115.76

Finding the Fourth Proportional to 11,151.66, 15,389.25 and 6,115.76

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Solution

The fourth proportional to 11,151.66, 15,389.25 and 6,115.76 is: 8,439.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.66 : 15,389.25 = 6,115.76 : x
  2. Step 2: Convert to fraction form
    11,151.66/15,389.25 = 6,115.76/x
  3. Step 3: Cross multiply
    11,151.66x = 15,389.25 × 6,115.76
  4. Step 4: Simplify right side
    11,151.66x = 94,116,959.58
  5. Step 5: Solve for x
    x = 94,116,959.58/11,151.66
  6. Step 6: Final answer
    x = 8,439.73

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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.