Home / 12,072,803.40-18,109,205.10-7,278,024.60

Finding the Fourth Proportional to 12,072,803.40, 18,109,205.10 and 7,278,024.60

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Solution

The fourth proportional to 12,072,803.40, 18,109,205.10 and 7,278,024.60 is: 10,917,036.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072,803.40 : 18,109,205.10 = 7,278,024.60 : x
  2. Step 2: Convert to fraction form
    12,072,803.40/18,109,205.10 = 7,278,024.60/x
  3. Step 3: Cross multiply
    12,072,803.40x = 18,109,205.10 × 7,278,024.60
  4. Step 4: Simplify right side
    12,072,803.40x = 131,799,240,204,245.47
  5. Step 5: Solve for x
    x = 131,799,240,204,245.47/12,072,803.40
  6. Step 6: Final answer
    x = 10,917,036.90

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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.