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Finding the Fourth Proportional to 21,758.91, 32,638.37 and 15,197.91

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Solution

The fourth proportional to 21,758.91, 32,638.37 and 15,197.91 is: 22,796.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,758.91 : 32,638.37 = 15,197.91 : x
  2. Step 2: Convert to fraction form
    21,758.91/32,638.37 = 15,197.91/x
  3. Step 3: Cross multiply
    21,758.91x = 32,638.37 × 15,197.91
  4. Step 4: Simplify right side
    21,758.91x = 496,034,933.82
  5. Step 5: Solve for x
    x = 496,034,933.82/21,758.91
  6. Step 6: Final answer
    x = 22,796.87

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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.