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Finding the Fourth Proportional to 55,309.39, 82,964.39 and 13,756.39

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Solution

The fourth proportional to 55,309.39, 82,964.39 and 13,756.39 is: 20,634.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,309.39 : 82,964.39 = 13,756.39 : x
  2. Step 2: Convert to fraction form
    55,309.39/82,964.39 = 13,756.39/x
  3. Step 3: Cross multiply
    55,309.39x = 82,964.39 × 13,756.39
  4. Step 4: Simplify right side
    55,309.39x = 1,141,290,436.17
  5. Step 5: Solve for x
    x = 1,141,290,436.17/55,309.39
  6. Step 6: Final answer
    x = 20,634.66

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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.