Home / 13,422,122.89-18,522,993.23-7,620,711.73

Finding the Fourth Proportional to 13,422,122.89, 18,522,993.23 and 7,620,711.73

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Solution

The fourth proportional to 13,422,122.89, 18,522,993.23 and 7,620,711.73 is: 10,516,845.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422,122.89 : 18,522,993.23 = 7,620,711.73 : x
  2. Step 2: Convert to fraction form
    13,422,122.89/18,522,993.23 = 7,620,711.73/x
  3. Step 3: Cross multiply
    13,422,122.89x = 18,522,993.23 × 7,620,711.73
  4. Step 4: Simplify right side
    13,422,122.89x = 141,158,391,726,738.22
  5. Step 5: Solve for x
    x = 141,158,391,726,738.22/13,422,122.89
  6. Step 6: Final answer
    x = 10,516,845.43

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.