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Finding the Fourth Proportional to 18,914.80, 26,100.16 and 10,955.92

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Solution

The fourth proportional to 18,914.80, 26,100.16 and 10,955.92 is: 15,117.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.80 : 26,100.16 = 10,955.92 : x
  2. Step 2: Convert to fraction form
    18,914.80/26,100.16 = 10,955.92/x
  3. Step 3: Cross multiply
    18,914.80x = 26,100.16 × 10,955.92
  4. Step 4: Simplify right side
    18,914.80x = 285,951,264.95
  5. Step 5: Solve for x
    x = 285,951,264.95/18,914.80
  6. Step 6: Final answer
    x = 15,117.86

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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.