Home / 10,879.70-15,013.96-6,630.76

Finding the Fourth Proportional to 10,879.70, 15,013.96 and 6,630.76

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Solution

The fourth proportional to 10,879.70, 15,013.96 and 6,630.76 is: 9,150.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.70 : 15,013.96 = 6,630.76 : x
  2. Step 2: Convert to fraction form
    10,879.70/15,013.96 = 6,630.76/x
  3. Step 3: Cross multiply
    10,879.70x = 15,013.96 × 6,630.76
  4. Step 4: Simplify right side
    10,879.70x = 99,553,965.41
  5. Step 5: Solve for x
    x = 99,553,965.41/10,879.70
  6. Step 6: Final answer
    x = 9,150.43

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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.