Home / 18,380.40-27,540.20-10,575.60

Finding the Fourth Proportional to 18,380.40, 27,540.20 and 10,575.60

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Solution

The fourth proportional to 18,380.40, 27,540.20 and 10,575.60 is: 15,845.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,380.40 : 27,540.20 = 10,575.60 : x
  2. Step 2: Convert to fraction form
    18,380.40/27,540.20 = 10,575.60/x
  3. Step 3: Cross multiply
    18,380.40x = 27,540.20 × 10,575.60
  4. Step 4: Simplify right side
    18,380.40x = 291,254,139.12
  5. Step 5: Solve for x
    x = 291,254,139.12/18,380.40
  6. Step 6: Final answer
    x = 15,845.91

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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.