Home / 20,158,879.20-30,238,318.80-12,096,722.40

Finding the Fourth Proportional to 20,158,879.20, 30,238,318.80 and 12,096,722.40

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Solution

The fourth proportional to 20,158,879.20, 30,238,318.80 and 12,096,722.40 is: 18,145,083.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158,879.20 : 30,238,318.80 = 12,096,722.40 : x
  2. Step 2: Convert to fraction form
    20,158,879.20/30,238,318.80 = 12,096,722.40/x
  3. Step 3: Cross multiply
    20,158,879.20x = 30,238,318.80 × 12,096,722.40
  4. Step 4: Simplify right side
    20,158,879.20x = 365,784,548,366,301.12
  5. Step 5: Solve for x
    x = 365,784,548,366,301.12/20,158,879.20
  6. Step 6: Final answer
    x = 18,145,083.60

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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.