Home / 25,715.28-38,572.84-7,247.28

Finding the Fourth Proportional to 25,715.28, 38,572.84 and 7,247.28

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Solution

The fourth proportional to 25,715.28, 38,572.84 and 7,247.28 is: 10,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,715.28 : 38,572.84 = 7,247.28 : x
  2. Step 2: Convert to fraction form
    25,715.28/38,572.84 = 7,247.28/x
  3. Step 3: Cross multiply
    25,715.28x = 38,572.84 × 7,247.28
  4. Step 4: Simplify right side
    25,715.28x = 279,548,171.88
  5. Step 5: Solve for x
    x = 279,548,171.88/25,715.28
  6. Step 6: Final answer
    x = 10,870.90

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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.