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Finding the Fourth Proportional to 36,230.40, 49,990.40 and 21,318.40

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Solution

The fourth proportional to 36,230.40, 49,990.40 and 21,318.40 is: 29,414.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,230.40 : 49,990.40 = 21,318.40 : x
  2. Step 2: Convert to fraction form
    36,230.40/49,990.40 = 21,318.40/x
  3. Step 3: Cross multiply
    36,230.40x = 49,990.40 × 21,318.40
  4. Step 4: Simplify right side
    36,230.40x = 1,065,715,343.36
  5. Step 5: Solve for x
    x = 1,065,715,343.36/36,230.40
  6. Step 6: Final answer
    x = 29,414.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.