Home / 20,442,820.40-30,664,230.60-15,340,986.80

Finding the Fourth Proportional to 20,442,820.40, 30,664,230.60 and 15,340,986.80

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Solution

The fourth proportional to 20,442,820.40, 30,664,230.60 and 15,340,986.80 is: 23,011,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442,820.40 : 30,664,230.60 = 15,340,986.80 : x
  2. Step 2: Convert to fraction form
    20,442,820.40/30,664,230.60 = 15,340,986.80/x
  3. Step 3: Cross multiply
    20,442,820.40x = 30,664,230.60 × 15,340,986.80
  4. Step 4: Simplify right side
    20,442,820.40x = 470,419,556,866,756.12
  5. Step 5: Solve for x
    x = 470,419,556,866,756.12/20,442,820.40
  6. Step 6: Final answer
    x = 23,011,480.20

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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.