Home / 12,149.85-16,720.25-11,807.22

Finding the Fourth Proportional to 12,149.85, 16,720.25 and 11,807.22

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Solution

The fourth proportional to 12,149.85, 16,720.25 and 11,807.22 is: 16,248.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,149.85 : 16,720.25 = 11,807.22 : x
  2. Step 2: Convert to fraction form
    12,149.85/16,720.25 = 11,807.22/x
  3. Step 3: Cross multiply
    12,149.85x = 16,720.25 × 11,807.22
  4. Step 4: Simplify right side
    12,149.85x = 197,419,670.21
  5. Step 5: Solve for x
    x = 197,419,670.21/12,149.85
  6. Step 6: Final answer
    x = 16,248.73

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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.