Home / 20,109,940.80-30,164,911.20-7,982,296.80

Finding the Fourth Proportional to 20,109,940.80, 30,164,911.20 and 7,982,296.80

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Solution

The fourth proportional to 20,109,940.80, 30,164,911.20 and 7,982,296.80 is: 11,973,445.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109,940.80 : 30,164,911.20 = 7,982,296.80 : x
  2. Step 2: Convert to fraction form
    20,109,940.80/30,164,911.20 = 7,982,296.80/x
  3. Step 3: Cross multiply
    20,109,940.80x = 30,164,911.20 × 7,982,296.80
  4. Step 4: Simplify right side
    20,109,940.80x = 240,785,274,144,044.16
  5. Step 5: Solve for x
    x = 240,785,274,144,044.16/20,109,940.80
  6. Step 6: Final answer
    x = 11,973,445.20

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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.