Home / 18,345.20-27,517.80-17,999.60

Finding the Fourth Proportional to 18,345.20, 27,517.80 and 17,999.60

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Solution

The fourth proportional to 18,345.20, 27,517.80 and 17,999.60 is: 26,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.20 : 27,517.80 = 17,999.60 : x
  2. Step 2: Convert to fraction form
    18,345.20/27,517.80 = 17,999.60/x
  3. Step 3: Cross multiply
    18,345.20x = 27,517.80 × 17,999.60
  4. Step 4: Simplify right side
    18,345.20x = 495,309,392.88
  5. Step 5: Solve for x
    x = 495,309,392.88/18,345.20
  6. Step 6: Final answer
    x = 26,999.40

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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.