Home / 11,951.20-16,475.56-7,970.86

Finding the Fourth Proportional to 11,951.20, 16,475.56 and 7,970.86

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Solution

The fourth proportional to 11,951.20, 16,475.56 and 7,970.86 is: 10,988.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,951.20 : 16,475.56 = 7,970.86 : x
  2. Step 2: Convert to fraction form
    11,951.20/16,475.56 = 7,970.86/x
  3. Step 3: Cross multiply
    11,951.20x = 16,475.56 × 7,970.86
  4. Step 4: Simplify right side
    11,951.20x = 131,324,382.18
  5. Step 5: Solve for x
    x = 131,324,382.18/11,951.20
  6. Step 6: Final answer
    x = 10,988.38

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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.