Home / 11,261.80-16,892.70-8,151.40

Finding the Fourth Proportional to 11,261.80, 16,892.70 and 8,151.40

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Solution

The fourth proportional to 11,261.80, 16,892.70 and 8,151.40 is: 12,227.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,261.80 : 16,892.70 = 8,151.40 : x
  2. Step 2: Convert to fraction form
    11,261.80/16,892.70 = 8,151.40/x
  3. Step 3: Cross multiply
    11,261.80x = 16,892.70 × 8,151.40
  4. Step 4: Simplify right side
    11,261.80x = 137,699,154.78
  5. Step 5: Solve for x
    x = 137,699,154.78/11,261.80
  6. Step 6: Final answer
    x = 12,227.10

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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.