Home / 18,009.60-26,998.20-11,432.40

Finding the Fourth Proportional to 18,009.60, 26,998.20 and 11,432.40

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Solution

The fourth proportional to 18,009.60, 26,998.20 and 11,432.40 is: 17,138.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009.60 : 26,998.20 = 11,432.40 : x
  2. Step 2: Convert to fraction form
    18,009.60/26,998.20 = 11,432.40/x
  3. Step 3: Cross multiply
    18,009.60x = 26,998.20 × 11,432.40
  4. Step 4: Simplify right side
    18,009.60x = 308,654,221.68
  5. Step 5: Solve for x
    x = 308,654,221.68/18,009.60
  6. Step 6: Final answer
    x = 17,138.32

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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.