Home / 12,072,806.40-18,109,209.60-7,278,027.60

Finding the Fourth Proportional to 12,072,806.40, 18,109,209.60 and 7,278,027.60

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Solution

The fourth proportional to 12,072,806.40, 18,109,209.60 and 7,278,027.60 is: 10,917,041.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072,806.40 : 18,109,209.60 = 7,278,027.60 : x
  2. Step 2: Convert to fraction form
    12,072,806.40/18,109,209.60 = 7,278,027.60/x
  3. Step 3: Cross multiply
    12,072,806.40x = 18,109,209.60 × 7,278,027.60
  4. Step 4: Simplify right side
    12,072,806.40x = 131,799,327,282,984.97
  5. Step 5: Solve for x
    x = 131,799,327,282,984.97/12,072,806.40
  6. Step 6: Final answer
    x = 10,917,041.40

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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.