Home / 13,666.20-18,853.20-8,287.80

Finding the Fourth Proportional to 13,666.20, 18,853.20 and 8,287.80

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Solution

The fourth proportional to 13,666.20, 18,853.20 and 8,287.80 is: 11,433.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.20 : 18,853.20 = 8,287.80 : x
  2. Step 2: Convert to fraction form
    13,666.20/18,853.20 = 8,287.80/x
  3. Step 3: Cross multiply
    13,666.20x = 18,853.20 × 8,287.80
  4. Step 4: Simplify right side
    13,666.20x = 156,251,550.96
  5. Step 5: Solve for x
    x = 156,251,550.96/13,666.20
  6. Step 6: Final answer
    x = 11,433.43

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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.