Home / 12,131.17-16,631.83-11,909.73

Finding the Fourth Proportional to 12,131.17, 16,631.83 and 11,909.73

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Solution

The fourth proportional to 12,131.17, 16,631.83 and 11,909.73 is: 16,328.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.17 : 16,631.83 = 11,909.73 : x
  2. Step 2: Convert to fraction form
    12,131.17/16,631.83 = 11,909.73/x
  3. Step 3: Cross multiply
    12,131.17x = 16,631.83 × 11,909.73
  4. Step 4: Simplify right side
    12,131.17x = 198,080,681.96
  5. Step 5: Solve for x
    x = 198,080,681.96/12,131.17
  6. Step 6: Final answer
    x = 16,328.25

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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.