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Finding the Fourth Proportional to 20,601.33, 30,901.99 and 7,451.99

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Solution

The fourth proportional to 20,601.33, 30,901.99 and 7,451.99 is: 11,177.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.33 : 30,901.99 = 7,451.99 : x
  2. Step 2: Convert to fraction form
    20,601.33/30,901.99 = 7,451.99/x
  3. Step 3: Cross multiply
    20,601.33x = 30,901.99 × 7,451.99
  4. Step 4: Simplify right side
    20,601.33x = 230,281,320.46
  5. Step 5: Solve for x
    x = 230,281,320.46/20,601.33
  6. Step 6: Final answer
    x = 11,177.98

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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.