Home / 15,114.42-20,855.41-8,399.86

Finding the Fourth Proportional to 15,114.42, 20,855.41 and 8,399.86

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Solution

The fourth proportional to 15,114.42, 20,855.41 and 8,399.86 is: 11,590.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,114.42 : 20,855.41 = 8,399.86 : x
  2. Step 2: Convert to fraction form
    15,114.42/20,855.41 = 8,399.86/x
  3. Step 3: Cross multiply
    15,114.42x = 20,855.41 × 8,399.86
  4. Step 4: Simplify right side
    15,114.42x = 175,182,451.10
  5. Step 5: Solve for x
    x = 175,182,451.10/15,114.42
  6. Step 6: Final answer
    x = 11,590.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.