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Finding the Fourth Proportional to 21,390.08, 32,082.48 and 8,233.04

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Solution

The fourth proportional to 21,390.08, 32,082.48 and 8,233.04 is: 12,348.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390.08 : 32,082.48 = 8,233.04 : x
  2. Step 2: Convert to fraction form
    21,390.08/32,082.48 = 8,233.04/x
  3. Step 3: Cross multiply
    21,390.08x = 32,082.48 × 8,233.04
  4. Step 4: Simplify right side
    21,390.08x = 264,136,421.35
  5. Step 5: Solve for x
    x = 264,136,421.35/21,390.08
  6. Step 6: Final answer
    x = 12,348.55

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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.