Home / 13,422,123.89-18,522,994.61-7,620,712.73

Finding the Fourth Proportional to 13,422,123.89, 18,522,994.61 and 7,620,712.73

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Solution

The fourth proportional to 13,422,123.89, 18,522,994.61 and 7,620,712.73 is: 10,516,846.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422,123.89 : 18,522,994.61 = 7,620,712.73 : x
  2. Step 2: Convert to fraction form
    13,422,123.89/18,522,994.61 = 7,620,712.73/x
  3. Step 3: Cross multiply
    13,422,123.89x = 18,522,994.61 × 7,620,712.73
  4. Step 4: Simplify right side
    13,422,123.89x = 141,158,420,822,148.38
  5. Step 5: Solve for x
    x = 141,158,420,822,148.38/13,422,123.89
  6. Step 6: Final answer
    x = 10,516,846.81

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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.