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Finding the Fourth Proportional to 10,910.77, 15,053.11 and 6,660.70

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Solution

The fourth proportional to 10,910.77, 15,053.11 and 6,660.70 is: 9,189.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,910.77 : 15,053.11 = 6,660.70 : x
  2. Step 2: Convert to fraction form
    10,910.77/15,053.11 = 6,660.70/x
  3. Step 3: Cross multiply
    10,910.77x = 15,053.11 × 6,660.70
  4. Step 4: Simplify right side
    10,910.77x = 100,264,195.49
  5. Step 5: Solve for x
    x = 100,264,195.49/10,910.77
  6. Step 6: Final answer
    x = 9,189.47

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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.