Home / 20,823,338.60-31,237,914.20-8,690,020.80

Finding the Fourth Proportional to 20,823,338.60, 31,237,914.20 and 8,690,020.80

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Solution

The fourth proportional to 20,823,338.60, 31,237,914.20 and 8,690,020.80 is: 13,036,244.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823,338.60 : 31,237,914.20 = 8,690,020.80 : x
  2. Step 2: Convert to fraction form
    20,823,338.60/31,237,914.20 = 8,690,020.80/x
  3. Step 3: Cross multiply
    20,823,338.60x = 31,237,914.20 × 8,690,020.80
  4. Step 4: Simplify right side
    20,823,338.60x = 271,458,124,146,615.38
  5. Step 5: Solve for x
    x = 271,458,124,146,615.38/20,823,338.60
  6. Step 6: Final answer
    x = 13,036,244.06

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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.