Home / 20,796,138.66-31,197,045.42-8,662,764.60

Finding the Fourth Proportional to 20,796,138.66, 31,197,045.42 and 8,662,764.60

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Solution

The fourth proportional to 20,796,138.66, 31,197,045.42 and 8,662,764.60 is: 12,995,328.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796,138.66 : 31,197,045.42 = 8,662,764.60 : x
  2. Step 2: Convert to fraction form
    20,796,138.66/31,197,045.42 = 8,662,764.60/x
  3. Step 3: Cross multiply
    20,796,138.66x = 31,197,045.42 × 8,662,764.60
  4. Step 4: Simplify right side
    20,796,138.66x = 270,252,660,688,968.12
  5. Step 5: Solve for x
    x = 270,252,660,688,968.12/20,796,138.66
  6. Step 6: Final answer
    x = 12,995,328.85

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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.