Home / 10,959.12-16,419.85-8,634.02

Finding the Fourth Proportional to 10,959.12, 16,419.85 and 8,634.02

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Solution

The fourth proportional to 10,959.12, 16,419.85 and 8,634.02 is: 12,936.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,959.12 : 16,419.85 = 8,634.02 : x
  2. Step 2: Convert to fraction form
    10,959.12/16,419.85 = 8,634.02/x
  3. Step 3: Cross multiply
    10,959.12x = 16,419.85 × 8,634.02
  4. Step 4: Simplify right side
    10,959.12x = 141,769,209.61
  5. Step 5: Solve for x
    x = 141,769,209.61/10,959.12
  6. Step 6: Final answer
    x = 12,936.19

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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.