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Finding the Fourth Proportional to 26,988, 40,482 and 8,520

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Solution

The fourth proportional to 26,988, 40,482 and 8,520 is: 12,780

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,988 : 40,482 = 8,520 : x
  2. Step 2: Convert to fraction form
    26,988/40,482 = 8,520/x
  3. Step 3: Cross multiply
    26,988x = 40,482 × 8,520
  4. Step 4: Simplify right side
    26,988x = 344,906,640
  5. Step 5: Solve for x
    x = 344,906,640/26,988
  6. Step 6: Final answer
    x = 12,780

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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.