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Finding the Fourth Proportional to 21,950, 32,925.36 and 6,369.20

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Solution

The fourth proportional to 21,950, 32,925.36 and 6,369.20 is: 9,553.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,950 : 32,925.36 = 6,369.20 : x
  2. Step 2: Convert to fraction form
    21,950/32,925.36 = 6,369.20/x
  3. Step 3: Cross multiply
    21,950x = 32,925.36 × 6,369.20
  4. Step 4: Simplify right side
    21,950x = 209,708,202.91
  5. Step 5: Solve for x
    x = 209,708,202.91/21,950
  6. Step 6: Final answer
    x = 9,553.90

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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.