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Finding the Fourth Proportional to 18,510.41, 25,517.80 and 13,196

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Solution

The fourth proportional to 18,510.41, 25,517.80 and 13,196 is: 18,191.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,510.41 : 25,517.80 = 13,196 : x
  2. Step 2: Convert to fraction form
    18,510.41/25,517.80 = 13,196/x
  3. Step 3: Cross multiply
    18,510.41x = 25,517.80 × 13,196
  4. Step 4: Simplify right side
    18,510.41x = 336,732,888.80
  5. Step 5: Solve for x
    x = 336,732,888.80/18,510.41
  6. Step 6: Final answer
    x = 18,191.54

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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.