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Finding the Fourth Proportional to 14,556.39, 21,837.69 and 8,319.39

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Solution

The fourth proportional to 14,556.39, 21,837.69 and 8,319.39 is: 12,480.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,556.39 : 21,837.69 = 8,319.39 : x
  2. Step 2: Convert to fraction form
    14,556.39/21,837.69 = 8,319.39/x
  3. Step 3: Cross multiply
    14,556.39x = 21,837.69 × 8,319.39
  4. Step 4: Simplify right side
    14,556.39x = 181,676,259.81
  5. Step 5: Solve for x
    x = 181,676,259.81/14,556.39
  6. Step 6: Final answer
    x = 12,480.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.