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Finding the Fourth Proportional to 20,396.52, 30,591.12 and 5,603.52

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Solution

The fourth proportional to 20,396.52, 30,591.12 and 5,603.52 is: 8,404.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.52 : 30,591.12 = 5,603.52 : x
  2. Step 2: Convert to fraction form
    20,396.52/30,591.12 = 5,603.52/x
  3. Step 3: Cross multiply
    20,396.52x = 30,591.12 × 5,603.52
  4. Step 4: Simplify right side
    20,396.52x = 171,417,952.74
  5. Step 5: Solve for x
    x = 171,417,952.74/20,396.52
  6. Step 6: Final answer
    x = 8,404.27

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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.