Home / 20,158,873.20-30,238,309.80-12,096,716.40

Finding the Fourth Proportional to 20,158,873.20, 30,238,309.80 and 12,096,716.40

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Solution

The fourth proportional to 20,158,873.20, 30,238,309.80 and 12,096,716.40 is: 18,145,074.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158,873.20 : 30,238,309.80 = 12,096,716.40 : x
  2. Step 2: Convert to fraction form
    20,158,873.20/30,238,309.80 = 12,096,716.40/x
  3. Step 3: Cross multiply
    20,158,873.20x = 30,238,309.80 × 12,096,716.40
  4. Step 4: Simplify right side
    20,158,873.20x = 365,784,258,065,940.75
  5. Step 5: Solve for x
    x = 365,784,258,065,940.75/20,158,873.20
  6. Step 6: Final answer
    x = 18,145,074.60

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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.