Home / 11,188.20-15,437.88-6,471.54

Finding the Fourth Proportional to 11,188.20, 15,437.88 and 6,471.54

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Solution

The fourth proportional to 11,188.20, 15,437.88 and 6,471.54 is: 8,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,188.20 : 15,437.88 = 6,471.54 : x
  2. Step 2: Convert to fraction form
    11,188.20/15,437.88 = 6,471.54/x
  3. Step 3: Cross multiply
    11,188.20x = 15,437.88 × 6,471.54
  4. Step 4: Simplify right side
    11,188.20x = 99,906,857.94
  5. Step 5: Solve for x
    x = 99,906,857.94/11,188.20
  6. Step 6: Final answer
    x = 8,929.66

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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.