Home / 20,951,989.20-31,404,655.80-8,168,245.20

Finding the Fourth Proportional to 20,951,989.20, 31,404,655.80 and 8,168,245.20

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Solution

The fourth proportional to 20,951,989.20, 31,404,655.80 and 8,168,245.20 is: 12,243,273.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951,989.20 : 31,404,655.80 = 8,168,245.20 : x
  2. Step 2: Convert to fraction form
    20,951,989.20/31,404,655.80 = 8,168,245.20/x
  3. Step 3: Cross multiply
    20,951,989.20x = 31,404,655.80 × 8,168,245.20
  4. Step 4: Simplify right side
    20,951,989.20x = 256,520,928,996,002.19
  5. Step 5: Solve for x
    x = 256,520,928,996,002.19/20,951,989.20
  6. Step 6: Final answer
    x = 12,243,273.25

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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.