Home / 20,280,010.20-30,420,015.30-10,178,986.20

Finding the Fourth Proportional to 20,280,010.20, 30,420,015.30 and 10,178,986.20

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Solution

The fourth proportional to 20,280,010.20, 30,420,015.30 and 10,178,986.20 is: 15,268,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280,010.20 : 30,420,015.30 = 10,178,986.20 : x
  2. Step 2: Convert to fraction form
    20,280,010.20/30,420,015.30 = 10,178,986.20/x
  3. Step 3: Cross multiply
    20,280,010.20x = 30,420,015.30 × 10,178,986.20
  4. Step 4: Simplify right side
    20,280,010.20x = 309,644,915,942,488.88
  5. Step 5: Solve for x
    x = 309,644,915,942,488.88/20,280,010.20
  6. Step 6: Final answer
    x = 15,268,479.30

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1.5x scale

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.