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Finding the Fourth Proportional to 25,676.46, 38,476.80 and 11,640.78

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Solution

The fourth proportional to 25,676.46, 38,476.80 and 11,640.78 is: 17,443.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,676.46 : 38,476.80 = 11,640.78 : x
  2. Step 2: Convert to fraction form
    25,676.46/38,476.80 = 11,640.78/x
  3. Step 3: Cross multiply
    25,676.46x = 38,476.80 × 11,640.78
  4. Step 4: Simplify right side
    25,676.46x = 447,899,963.90
  5. Step 5: Solve for x
    x = 447,899,963.90/25,676.46
  6. Step 6: Final answer
    x = 17,443.99

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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.