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Finding the Fourth Proportional to 25,716.28, 38,574.34 and 7,248.28

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Solution

The fourth proportional to 25,716.28, 38,574.34 and 7,248.28 is: 10,872.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,716.28 : 38,574.34 = 7,248.28 : x
  2. Step 2: Convert to fraction form
    25,716.28/38,574.34 = 7,248.28/x
  3. Step 3: Cross multiply
    25,716.28x = 38,574.34 × 7,248.28
  4. Step 4: Simplify right side
    25,716.28x = 279,597,617.14
  5. Step 5: Solve for x
    x = 279,597,617.14/25,716.28
  6. Step 6: Final answer
    x = 10,872.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.