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Finding the Fourth Proportional to 25,843.71, 38,760.43 and 7,118.90

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Solution

The fourth proportional to 25,843.71, 38,760.43 and 7,118.90 is: 10,676.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,843.71 : 38,760.43 = 7,118.90 : x
  2. Step 2: Convert to fraction form
    25,843.71/38,760.43 = 7,118.90/x
  3. Step 3: Cross multiply
    25,843.71x = 38,760.43 × 7,118.90
  4. Step 4: Simplify right side
    25,843.71x = 275,931,625.13
  5. Step 5: Solve for x
    x = 275,931,625.13/25,843.71
  6. Step 6: Final answer
    x = 10,676.94

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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.