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Finding the Fourth Proportional to 18,978.18, 26,188.80 and 10,595.22

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Solution

The fourth proportional to 18,978.18, 26,188.80 and 10,595.22 is: 14,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,978.18 : 26,188.80 = 10,595.22 : x
  2. Step 2: Convert to fraction form
    18,978.18/26,188.80 = 10,595.22/x
  3. Step 3: Cross multiply
    18,978.18x = 26,188.80 × 10,595.22
  4. Step 4: Simplify right side
    18,978.18x = 277,476,097.54
  5. Step 5: Solve for x
    x = 277,476,097.54/18,978.18
  6. Step 6: Final answer
    x = 14,620.80

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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.