Home / 48,639.20-72,949.80-13,571.60

Finding the Fourth Proportional to 48,639.20, 72,949.80 and 13,571.60

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Solution

The fourth proportional to 48,639.20, 72,949.80 and 13,571.60 is: 20,354.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,639.20 : 72,949.80 = 13,571.60 : x
  2. Step 2: Convert to fraction form
    48,639.20/72,949.80 = 13,571.60/x
  3. Step 3: Cross multiply
    48,639.20x = 72,949.80 × 13,571.60
  4. Step 4: Simplify right side
    48,639.20x = 990,045,505.68
  5. Step 5: Solve for x
    x = 990,045,505.68/48,639.20
  6. Step 6: Final answer
    x = 20,354.89

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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.