Home / 18,727.20-25,844.40-12,765.60

Finding the Fourth Proportional to 18,727.20, 25,844.40 and 12,765.60

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Solution

The fourth proportional to 18,727.20, 25,844.40 and 12,765.60 is: 17,617.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.20 : 25,844.40 = 12,765.60 : x
  2. Step 2: Convert to fraction form
    18,727.20/25,844.40 = 12,765.60/x
  3. Step 3: Cross multiply
    18,727.20x = 25,844.40 × 12,765.60
  4. Step 4: Simplify right side
    18,727.20x = 329,919,272.64
  5. Step 5: Solve for x
    x = 329,919,272.64/18,727.20
  6. Step 6: Final answer
    x = 17,617.12

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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.