Home / 10,209.62-15,310.10-7,412.99

Finding the Fourth Proportional to 10,209.62, 15,310.10 and 7,412.99

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Solution

The fourth proportional to 10,209.62, 15,310.10 and 7,412.99 is: 11,116.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,209.62 : 15,310.10 = 7,412.99 : x
  2. Step 2: Convert to fraction form
    10,209.62/15,310.10 = 7,412.99/x
  3. Step 3: Cross multiply
    10,209.62x = 15,310.10 × 7,412.99
  4. Step 4: Simplify right side
    10,209.62x = 113,493,560.18
  5. Step 5: Solve for x
    x = 113,493,560.18/10,209.62
  6. Step 6: Final answer
    x = 11,116.33

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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.