Home / 13,154.20-18,159.42-8,684.44

Finding the Fourth Proportional to 13,154.20, 18,159.42 and 8,684.44

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Solution

The fourth proportional to 13,154.20, 18,159.42 and 8,684.44 is: 11,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.20 : 18,159.42 = 8,684.44 : x
  2. Step 2: Convert to fraction form
    13,154.20/18,159.42 = 8,684.44/x
  3. Step 3: Cross multiply
    13,154.20x = 18,159.42 × 8,684.44
  4. Step 4: Simplify right side
    13,154.20x = 157,704,393.42
  5. Step 5: Solve for x
    x = 157,704,393.42/13,154.20
  6. Step 6: Final answer
    x = 11,988.90

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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.