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Finding the Fourth Proportional to 25,658.80, 38,490.72 and 10,662.82

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Solution

The fourth proportional to 25,658.80, 38,490.72 and 10,662.82 is: 15,995.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,658.80 : 38,490.72 = 10,662.82 : x
  2. Step 2: Convert to fraction form
    25,658.80/38,490.72 = 10,662.82/x
  3. Step 3: Cross multiply
    25,658.80x = 38,490.72 × 10,662.82
  4. Step 4: Simplify right side
    25,658.80x = 410,419,619.03
  5. Step 5: Solve for x
    x = 410,419,619.03/25,658.80
  6. Step 6: Final answer
    x = 15,995.28

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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.