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Finding the Fourth Proportional to 26,591.31, 39,872.84 and 7,868.76

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Solution

The fourth proportional to 26,591.31, 39,872.84 and 7,868.76 is: 11,798.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,591.31 : 39,872.84 = 7,868.76 : x
  2. Step 2: Convert to fraction form
    26,591.31/39,872.84 = 7,868.76/x
  3. Step 3: Cross multiply
    26,591.31x = 39,872.84 × 7,868.76
  4. Step 4: Simplify right side
    26,591.31x = 313,749,808.48
  5. Step 5: Solve for x
    x = 313,749,808.48/26,591.31
  6. Step 6: Final answer
    x = 11,798.96

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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.