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Finding the Fourth Proportional to 21,757.68, 32,640.52 and 9,277.68

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Solution

The fourth proportional to 21,757.68, 32,640.52 and 9,277.68 is: 13,918.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,757.68 : 32,640.52 = 9,277.68 : x
  2. Step 2: Convert to fraction form
    21,757.68/32,640.52 = 9,277.68/x
  3. Step 3: Cross multiply
    21,757.68x = 32,640.52 × 9,277.68
  4. Step 4: Simplify right side
    21,757.68x = 302,828,299.59
  5. Step 5: Solve for x
    x = 302,828,299.59/21,757.68
  6. Step 6: Final answer
    x = 13,918.23

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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.