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Finding the Fourth Proportional to 21,718.77, 32,556.08 and 8,553.03

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Solution

The fourth proportional to 21,718.77, 32,556.08 and 8,553.03 is: 12,820.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,718.77 : 32,556.08 = 8,553.03 : x
  2. Step 2: Convert to fraction form
    21,718.77/32,556.08 = 8,553.03/x
  3. Step 3: Cross multiply
    21,718.77x = 32,556.08 × 8,553.03
  4. Step 4: Simplify right side
    21,718.77x = 278,452,923.38
  5. Step 5: Solve for x
    x = 278,452,923.38/21,718.77
  6. Step 6: Final answer
    x = 12,820.85

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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.