Home / 20,506,790.40-30,764,851.20-11,982,739.20

Finding the Fourth Proportional to 20,506,790.40, 30,764,851.20 and 11,982,739.20

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Solution

The fourth proportional to 20,506,790.40, 30,764,851.20 and 11,982,739.20 is: 17,976,835.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506,790.40 : 30,764,851.20 = 11,982,739.20 : x
  2. Step 2: Convert to fraction form
    20,506,790.40/30,764,851.20 = 11,982,739.20/x
  3. Step 3: Cross multiply
    20,506,790.40x = 30,764,851.20 × 11,982,739.20
  4. Step 4: Simplify right side
    20,506,790.40x = 368,647,188,456,407
  5. Step 5: Solve for x
    x = 368,647,188,456,407/20,506,790.40
  6. Step 6: Final answer
    x = 17,976,835.05

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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.