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Finding the Fourth Proportional to 21,759.56, 32,641.07 and 9,279.69

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Solution

The fourth proportional to 21,759.56, 32,641.07 and 9,279.69 is: 13,920.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,759.56 : 32,641.07 = 9,279.69 : x
  2. Step 2: Convert to fraction form
    21,759.56/32,641.07 = 9,279.69/x
  3. Step 3: Cross multiply
    21,759.56x = 32,641.07 × 9,279.69
  4. Step 4: Simplify right side
    21,759.56x = 302,899,010.87
  5. Step 5: Solve for x
    x = 302,899,010.87/21,759.56
  6. Step 6: Final answer
    x = 13,920.28

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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.