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Finding the Fourth Proportional to 18,954.60, 26,156.16 and 10,456.84

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Solution

The fourth proportional to 18,954.60, 26,156.16 and 10,456.84 is: 14,429.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.60 : 26,156.16 = 10,456.84 : x
  2. Step 2: Convert to fraction form
    18,954.60/26,156.16 = 10,456.84/x
  3. Step 3: Cross multiply
    18,954.60x = 26,156.16 × 10,456.84
  4. Step 4: Simplify right side
    18,954.60x = 273,510,780.13
  5. Step 5: Solve for x
    x = 273,510,780.13/18,954.60
  6. Step 6: Final answer
    x = 14,429.78

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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.