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Finding the Fourth Proportional to 25,495.28, 38,243.16 and 7,965.20

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Solution

The fourth proportional to 25,495.28, 38,243.16 and 7,965.20 is: 11,947.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,495.28 : 38,243.16 = 7,965.20 : x
  2. Step 2: Convert to fraction form
    25,495.28/38,243.16 = 7,965.20/x
  3. Step 3: Cross multiply
    25,495.28x = 38,243.16 × 7,965.20
  4. Step 4: Simplify right side
    25,495.28x = 304,614,418.03
  5. Step 5: Solve for x
    x = 304,614,418.03/25,495.28
  6. Step 6: Final answer
    x = 11,947.87

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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.