Home / 10,380.72-15,584.04-9,909.84

Finding the Fourth Proportional to 10,380.72, 15,584.04 and 9,909.84

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Solution

The fourth proportional to 10,380.72, 15,584.04 and 9,909.84 is: 14,877.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.72 : 15,584.04 = 9,909.84 : x
  2. Step 2: Convert to fraction form
    10,380.72/15,584.04 = 9,909.84/x
  3. Step 3: Cross multiply
    10,380.72x = 15,584.04 × 9,909.84
  4. Step 4: Simplify right side
    10,380.72x = 154,435,342.95
  5. Step 5: Solve for x
    x = 154,435,342.95/10,380.72
  6. Step 6: Final answer
    x = 14,877.13

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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.