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Finding the Fourth Proportional to 20,325.88, 30,488.82 and 6,474.88

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Solution

The fourth proportional to 20,325.88, 30,488.82 and 6,474.88 is: 9,712.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.88 : 30,488.82 = 6,474.88 : x
  2. Step 2: Convert to fraction form
    20,325.88/30,488.82 = 6,474.88/x
  3. Step 3: Cross multiply
    20,325.88x = 30,488.82 × 6,474.88
  4. Step 4: Simplify right side
    20,325.88x = 197,411,450.84
  5. Step 5: Solve for x
    x = 197,411,450.84/20,325.88
  6. Step 6: Final answer
    x = 9,712.32

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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.