Home / 18,219.60-25,134.14-15,697.33

Finding the Fourth Proportional to 18,219.60, 25,134.14 and 15,697.33

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Solution

The fourth proportional to 18,219.60, 25,134.14 and 15,697.33 is: 21,654.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.60 : 25,134.14 = 15,697.33 : x
  2. Step 2: Convert to fraction form
    18,219.60/25,134.14 = 15,697.33/x
  3. Step 3: Cross multiply
    18,219.60x = 25,134.14 × 15,697.33
  4. Step 4: Simplify right side
    18,219.60x = 394,538,889.85
  5. Step 5: Solve for x
    x = 394,538,889.85/18,219.60
  6. Step 6: Final answer
    x = 21,654.64

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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.