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Finding the Fourth Proportional to 21,555.78, 32,306.25 and 9,696.87

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Solution

The fourth proportional to 21,555.78, 32,306.25 and 9,696.87 is: 14,532.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.78 : 32,306.25 = 9,696.87 : x
  2. Step 2: Convert to fraction form
    21,555.78/32,306.25 = 9,696.87/x
  3. Step 3: Cross multiply
    21,555.78x = 32,306.25 × 9,696.87
  4. Step 4: Simplify right side
    21,555.78x = 313,269,506.44
  5. Step 5: Solve for x
    x = 313,269,506.44/21,555.78
  6. Step 6: Final answer
    x = 14,532.97

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1.5x scale

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.