Home / 18,728,138.20-28,073,544.90-8,613,117.40

Finding the Fourth Proportional to 18,728,138.20, 28,073,544.90 and 8,613,117.40

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Solution

The fourth proportional to 18,728,138.20, 28,073,544.90 and 8,613,117.40 is: 12,911,093.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728,138.20 : 28,073,544.90 = 8,613,117.40 : x
  2. Step 2: Convert to fraction form
    18,728,138.20/28,073,544.90 = 8,613,117.40/x
  3. Step 3: Cross multiply
    18,728,138.20x = 28,073,544.90 × 8,613,117.40
  4. Step 4: Simplify right side
    18,728,138.20x = 241,800,738,057,871.25
  5. Step 5: Solve for x
    x = 241,800,738,057,871.25/18,728,138.20
  6. Step 6: Final answer
    x = 12,911,093.22

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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.