Home / 12,103,993.20-18,155,989.80-11,180,204.40

Finding the Fourth Proportional to 12,103,993.20, 18,155,989.80 and 11,180,204.40

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Solution

The fourth proportional to 12,103,993.20, 18,155,989.80 and 11,180,204.40 is: 16,770,306.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,103,993.20 : 18,155,989.80 = 11,180,204.40 : x
  2. Step 2: Convert to fraction form
    12,103,993.20/18,155,989.80 = 11,180,204.40/x
  3. Step 3: Cross multiply
    12,103,993.20x = 18,155,989.80 × 11,180,204.40
  4. Step 4: Simplify right side
    12,103,993.20x = 202,987,677,048,315.12
  5. Step 5: Solve for x
    x = 202,987,677,048,315.12/12,103,993.20
  6. Step 6: Final answer
    x = 16,770,306.60

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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.