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Finding the Fourth Proportional to 18,914.31, 26,100.50 and 10,955.12

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Solution

The fourth proportional to 18,914.31, 26,100.50 and 10,955.12 is: 15,117.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.31 : 26,100.50 = 10,955.12 : x
  2. Step 2: Convert to fraction form
    18,914.31/26,100.50 = 10,955.12/x
  3. Step 3: Cross multiply
    18,914.31x = 26,100.50 × 10,955.12
  4. Step 4: Simplify right side
    18,914.31x = 285,933,924.28
  5. Step 5: Solve for x
    x = 285,933,924.28/18,914.31
  6. Step 6: Final answer
    x = 15,117.33

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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.