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Finding the Fourth Proportional to 11,381.22, 17,082.90 and 8,703.90

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Solution

The fourth proportional to 11,381.22, 17,082.90 and 8,703.90 is: 13,064.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,381.22 : 17,082.90 = 8,703.90 : x
  2. Step 2: Convert to fraction form
    11,381.22/17,082.90 = 8,703.90/x
  3. Step 3: Cross multiply
    11,381.22x = 17,082.90 × 8,703.90
  4. Step 4: Simplify right side
    11,381.22x = 148,687,853.31
  5. Step 5: Solve for x
    x = 148,687,853.31/11,381.22
  6. Step 6: Final answer
    x = 13,064.32

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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.