Home / 20,490,634.20-30,747,761.10-7,720,303.80

Finding the Fourth Proportional to 20,490,634.20, 30,747,761.10 and 7,720,303.80

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Solution

The fourth proportional to 20,490,634.20, 30,747,761.10 and 7,720,303.80 is: 11,584,905.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490,634.20 : 30,747,761.10 = 7,720,303.80 : x
  2. Step 2: Convert to fraction form
    20,490,634.20/30,747,761.10 = 7,720,303.80/x
  3. Step 3: Cross multiply
    20,490,634.20x = 30,747,761.10 × 7,720,303.80
  4. Step 4: Simplify right side
    20,490,634.20x = 237,382,056,861,822.19
  5. Step 5: Solve for x
    x = 237,382,056,861,822.19/20,490,634.20
  6. Step 6: Final answer
    x = 11,584,905.31

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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.