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Finding the Fourth Proportional to 18,808.86, 25,955.13 and 10,743.39

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Solution

The fourth proportional to 18,808.86, 25,955.13 and 10,743.39 is: 14,825.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.86 : 25,955.13 = 10,743.39 : x
  2. Step 2: Convert to fraction form
    18,808.86/25,955.13 = 10,743.39/x
  3. Step 3: Cross multiply
    18,808.86x = 25,955.13 × 10,743.39
  4. Step 4: Simplify right side
    18,808.86x = 278,846,084.09
  5. Step 5: Solve for x
    x = 278,846,084.09/18,808.86
  6. Step 6: Final answer
    x = 14,825.25

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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.