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Finding the Fourth Proportional to 25,245.40, 37,815.90 and 17,321.20

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Solution

The fourth proportional to 25,245.40, 37,815.90 and 17,321.20 is: 25,945.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,245.40 : 37,815.90 = 17,321.20 : x
  2. Step 2: Convert to fraction form
    25,245.40/37,815.90 = 17,321.20/x
  3. Step 3: Cross multiply
    25,245.40x = 37,815.90 × 17,321.20
  4. Step 4: Simplify right side
    25,245.40x = 655,016,767.08
  5. Step 5: Solve for x
    x = 655,016,767.08/25,245.40
  6. Step 6: Final answer
    x = 25,945.98

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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.