Home / 25,478.20-38,246.10-19,660.60

Finding the Fourth Proportional to 25,478.20, 38,246.10 and 19,660.60

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Solution

The fourth proportional to 25,478.20, 38,246.10 and 19,660.60 is: 29,513.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,478.20 : 38,246.10 = 19,660.60 : x
  2. Step 2: Convert to fraction form
    25,478.20/38,246.10 = 19,660.60/x
  3. Step 3: Cross multiply
    25,478.20x = 38,246.10 × 19,660.60
  4. Step 4: Simplify right side
    25,478.20x = 751,941,273.66
  5. Step 5: Solve for x
    x = 751,941,273.66/25,478.20
  6. Step 6: Final answer
    x = 29,513.12

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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.