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Finding the Fourth Proportional to 25,720.68, 38,584.71 and 7,952.72

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Solution

The fourth proportional to 25,720.68, 38,584.71 and 7,952.72 is: 11,930.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,720.68 : 38,584.71 = 7,952.72 : x
  2. Step 2: Convert to fraction form
    25,720.68/38,584.71 = 7,952.72/x
  3. Step 3: Cross multiply
    25,720.68x = 38,584.71 × 7,952.72
  4. Step 4: Simplify right side
    25,720.68x = 306,853,511.25
  5. Step 5: Solve for x
    x = 306,853,511.25/25,720.68
  6. Step 6: Final answer
    x = 11,930.23

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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.