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Finding the Fourth Proportional to 21,809.08, 32,718.09 and 8,481.76

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Solution

The fourth proportional to 21,809.08, 32,718.09 and 8,481.76 is: 12,724.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,809.08 : 32,718.09 = 8,481.76 : x
  2. Step 2: Convert to fraction form
    21,809.08/32,718.09 = 8,481.76/x
  3. Step 3: Cross multiply
    21,809.08x = 32,718.09 × 8,481.76
  4. Step 4: Simplify right side
    21,809.08x = 277,506,987.04
  5. Step 5: Solve for x
    x = 277,506,987.04/21,809.08
  6. Step 6: Final answer
    x = 12,724.38

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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.