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Finding the Fourth Proportional to 10,419.52, 15,611.04 and 8,675.71

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Solution

The fourth proportional to 10,419.52, 15,611.04 and 8,675.71 is: 12,998.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,419.52 : 15,611.04 = 8,675.71 : x
  2. Step 2: Convert to fraction form
    10,419.52/15,611.04 = 8,675.71/x
  3. Step 3: Cross multiply
    10,419.52x = 15,611.04 × 8,675.71
  4. Step 4: Simplify right side
    10,419.52x = 135,436,855.84
  5. Step 5: Solve for x
    x = 135,436,855.84/10,419.52
  6. Step 6: Final answer
    x = 12,998.38

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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.