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Finding the Fourth Proportional to 18,397, 25,387.95 and 10,013.50

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Solution

The fourth proportional to 18,397, 25,387.95 and 10,013.50 is: 13,818.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,397 : 25,387.95 = 10,013.50 : x
  2. Step 2: Convert to fraction form
    18,397/25,387.95 = 10,013.50/x
  3. Step 3: Cross multiply
    18,397x = 25,387.95 × 10,013.50
  4. Step 4: Simplify right side
    18,397x = 254,222,237.33
  5. Step 5: Solve for x
    x = 254,222,237.33/18,397
  6. Step 6: Final answer
    x = 13,818.68

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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.