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Finding the Fourth Proportional to 10,245.77, 15,375.95 and 7,908.11

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Solution

The fourth proportional to 10,245.77, 15,375.95 and 7,908.11 is: 11,867.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,245.77 : 15,375.95 = 7,908.11 : x
  2. Step 2: Convert to fraction form
    10,245.77/15,375.95 = 7,908.11/x
  3. Step 3: Cross multiply
    10,245.77x = 15,375.95 × 7,908.11
  4. Step 4: Simplify right side
    10,245.77x = 121,594,703.95
  5. Step 5: Solve for x
    x = 121,594,703.95/10,245.77
  6. Step 6: Final answer
    x = 11,867.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.