Home / 20,160,640.20-30,240,960.30-7,381,561.80

Finding the Fourth Proportional to 20,160,640.20, 30,240,960.30 and 7,381,561.80

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Solution

The fourth proportional to 20,160,640.20, 30,240,960.30 and 7,381,561.80 is: 11,072,342.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160,640.20 : 30,240,960.30 = 7,381,561.80 : x
  2. Step 2: Convert to fraction form
    20,160,640.20/30,240,960.30 = 7,381,561.80/x
  3. Step 3: Cross multiply
    20,160,640.20x = 30,240,960.30 × 7,381,561.80
  4. Step 4: Simplify right side
    20,160,640.20x = 223,225,517,345,796.53
  5. Step 5: Solve for x
    x = 223,225,517,345,796.53/20,160,640.20
  6. Step 6: Final answer
    x = 11,072,342.70

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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.