Home / 20,919,896.60-31,373,624.10-8,133,042.20

Finding the Fourth Proportional to 20,919,896.60, 31,373,624.10 and 8,133,042.20

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Solution

The fourth proportional to 20,919,896.60, 31,373,624.10 and 8,133,042.20 is: 12,197,144.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919,896.60 : 31,373,624.10 = 8,133,042.20 : x
  2. Step 2: Convert to fraction form
    20,919,896.60/31,373,624.10 = 8,133,042.20/x
  3. Step 3: Cross multiply
    20,919,896.60x = 31,373,624.10 × 8,133,042.20
  4. Step 4: Simplify right side
    20,919,896.60x = 255,163,008,772,237.03
  5. Step 5: Solve for x
    x = 255,163,008,772,237.03/20,919,896.60
  6. Step 6: Final answer
    x = 12,197,144.84

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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.