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Finding the Fourth Proportional to 18,874.06, 26,046.78 and 10,918.78

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Solution

The fourth proportional to 18,874.06, 26,046.78 and 10,918.78 is: 15,068.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,874.06 : 26,046.78 = 10,918.78 : x
  2. Step 2: Convert to fraction form
    18,874.06/26,046.78 = 10,918.78/x
  3. Step 3: Cross multiply
    18,874.06x = 26,046.78 × 10,918.78
  4. Step 4: Simplify right side
    18,874.06x = 284,399,060.53
  5. Step 5: Solve for x
    x = 284,399,060.53/18,874.06
  6. Step 6: Final answer
    x = 15,068.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.