Home / 20,759,959.20-31,139,938.80-11,194,021.20

Finding the Fourth Proportional to 20,759,959.20, 31,139,938.80 and 11,194,021.20

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Solution

The fourth proportional to 20,759,959.20, 31,139,938.80 and 11,194,021.20 is: 16,791,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759,959.20 : 31,139,938.80 = 11,194,021.20 : x
  2. Step 2: Convert to fraction form
    20,759,959.20/31,139,938.80 = 11,194,021.20/x
  3. Step 3: Cross multiply
    20,759,959.20x = 31,139,938.80 × 11,194,021.20
  4. Step 4: Simplify right side
    20,759,959.20x = 348,581,135,093,902.56
  5. Step 5: Solve for x
    x = 348,581,135,093,902.56/20,759,959.20
  6. Step 6: Final answer
    x = 16,791,031.80

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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.