Home / 20,969,533.46-31,456,116.59-6,399,730.78

Finding the Fourth Proportional to 20,969,533.46, 31,456,116.59 and 6,399,730.78

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Solution

The fourth proportional to 20,969,533.46, 31,456,116.59 and 6,399,730.78 is: 9,600,150.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969,533.46 : 31,456,116.59 = 6,399,730.78 : x
  2. Step 2: Convert to fraction form
    20,969,533.46/31,456,116.59 = 6,399,730.78/x
  3. Step 3: Cross multiply
    20,969,533.46x = 31,456,116.59 × 6,399,730.78
  4. Step 4: Simplify right side
    20,969,533.46x = 201,310,677,560,291.66
  5. Step 5: Solve for x
    x = 201,310,677,560,291.66/20,969,533.46
  6. Step 6: Final answer
    x = 9,600,150.52

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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.