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Finding the Fourth Proportional to 8,795.99, 13,141.90 and 8,387.75

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Solution

The fourth proportional to 8,795.99, 13,141.90 and 8,387.75 is: 12,531.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,795.99 : 13,141.90 = 8,387.75 : x
  2. Step 2: Convert to fraction form
    8,795.99/13,141.90 = 8,387.75/x
  3. Step 3: Cross multiply
    8,795.99x = 13,141.90 × 8,387.75
  4. Step 4: Simplify right side
    8,795.99x = 110,230,967.88
  5. Step 5: Solve for x
    x = 110,230,967.88/8,795.99
  6. Step 6: Final answer
    x = 12,531.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.