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Finding the Fourth Proportional to 18,510, 25,543.80 and 10,126.68

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Solution

The fourth proportional to 18,510, 25,543.80 and 10,126.68 is: 13,974.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,510 : 25,543.80 = 10,126.68 : x
  2. Step 2: Convert to fraction form
    18,510/25,543.80 = 10,126.68/x
  3. Step 3: Cross multiply
    18,510x = 25,543.80 × 10,126.68
  4. Step 4: Simplify right side
    18,510x = 258,673,888.58
  5. Step 5: Solve for x
    x = 258,673,888.58/18,510
  6. Step 6: Final answer
    x = 13,974.82

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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.