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Finding the Fourth Proportional to 36,689.79, 55,016.93 and 17,947.89

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Solution

The fourth proportional to 36,689.79, 55,016.93 and 17,947.89 is: 26,913.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,689.79 : 55,016.93 = 17,947.89 : x
  2. Step 2: Convert to fraction form
    36,689.79/55,016.93 = 17,947.89/x
  3. Step 3: Cross multiply
    36,689.79x = 55,016.93 × 17,947.89
  4. Step 4: Simplify right side
    36,689.79x = 987,437,718.04
  5. Step 5: Solve for x
    x = 987,437,718.04/36,689.79
  6. Step 6: Final answer
    x = 26,913.15

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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.