Home / 11,187.45-15,438.78-6,151.55

Finding the Fourth Proportional to 11,187.45, 15,438.78 and 6,151.55

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Solution

The fourth proportional to 11,187.45, 15,438.78 and 6,151.55 is: 8,489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.45 : 15,438.78 = 6,151.55 : x
  2. Step 2: Convert to fraction form
    11,187.45/15,438.78 = 6,151.55/x
  3. Step 3: Cross multiply
    11,187.45x = 15,438.78 × 6,151.55
  4. Step 4: Simplify right side
    11,187.45x = 94,972,349.92
  5. Step 5: Solve for x
    x = 94,972,349.92/11,187.45
  6. Step 6: Final answer
    x = 8,489.19

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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.