Home / 20,979,803.40-31,469,705.10-6,607,276.80

Finding the Fourth Proportional to 20,979,803.40, 31,469,705.10 and 6,607,276.80

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Solution

The fourth proportional to 20,979,803.40, 31,469,705.10 and 6,607,276.80 is: 9,910,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,979,803.40 : 31,469,705.10 = 6,607,276.80 : x
  2. Step 2: Convert to fraction form
    20,979,803.40/31,469,705.10 = 6,607,276.80/x
  3. Step 3: Cross multiply
    20,979,803.40x = 31,469,705.10 × 6,607,276.80
  4. Step 4: Simplify right side
    20,979,803.40x = 207,929,052,410,071.69
  5. Step 5: Solve for x
    x = 207,929,052,410,071.69/20,979,803.40
  6. Step 6: Final answer
    x = 9,910,915.20

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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.