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Finding the Fourth Proportional to 10,965.67, 16,452.15 and 4,390.09

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Solution

The fourth proportional to 10,965.67, 16,452.15 and 4,390.09 is: 6,586.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,965.67 : 16,452.15 = 4,390.09 : x
  2. Step 2: Convert to fraction form
    10,965.67/16,452.15 = 4,390.09/x
  3. Step 3: Cross multiply
    10,965.67x = 16,452.15 × 4,390.09
  4. Step 4: Simplify right side
    10,965.67x = 72,226,419.19
  5. Step 5: Solve for x
    x = 72,226,419.19/10,965.67
  6. Step 6: Final answer
    x = 6,586.59

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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.