Home / 12,128,711.40-18,193,067.10-4,945,400.55

Finding the Fourth Proportional to 12,128,711.40, 18,193,067.10 and 4,945,400.55

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Solution

The fourth proportional to 12,128,711.40, 18,193,067.10 and 4,945,400.55 is: 7,418,100.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,711.40 : 18,193,067.10 = 4,945,400.55 : x
  2. Step 2: Convert to fraction form
    12,128,711.40/18,193,067.10 = 4,945,400.55/x
  3. Step 3: Cross multiply
    12,128,711.40x = 18,193,067.10 × 4,945,400.55
  4. Step 4: Simplify right side
    12,128,711.40x = 89,972,004,042,526.91
  5. Step 5: Solve for x
    x = 89,972,004,042,526.91/12,128,711.40
  6. Step 6: Final answer
    x = 7,418,100.83

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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.