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Finding the Fourth Proportional to 25,618, 38,429.52 and 7,150

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Solution

The fourth proportional to 25,618, 38,429.52 and 7,150 is: 10,725.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,618 : 38,429.52 = 7,150 : x
  2. Step 2: Convert to fraction form
    25,618/38,429.52 = 7,150/x
  3. Step 3: Cross multiply
    25,618x = 38,429.52 × 7,150
  4. Step 4: Simplify right side
    25,618x = 274,771,068
  5. Step 5: Solve for x
    x = 274,771,068/25,618
  6. Step 6: Final answer
    x = 10,725.70

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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.