Home / 11,967.38-16,445.61-11,418.55

Finding the Fourth Proportional to 11,967.38, 16,445.61 and 11,418.55

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Solution

The fourth proportional to 11,967.38, 16,445.61 and 11,418.55 is: 15,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,967.38 : 16,445.61 = 11,418.55 : x
  2. Step 2: Convert to fraction form
    11,967.38/16,445.61 = 11,418.55/x
  3. Step 3: Cross multiply
    11,967.38x = 16,445.61 × 11,418.55
  4. Step 4: Simplify right side
    11,967.38x = 187,784,880.74
  5. Step 5: Solve for x
    x = 187,784,880.74/11,967.38
  6. Step 6: Final answer
    x = 15,691.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.