Home / 12,072,807.90-18,109,211.85-7,278,029.10

Finding the Fourth Proportional to 12,072,807.90, 18,109,211.85 and 7,278,029.10

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Solution

The fourth proportional to 12,072,807.90, 18,109,211.85 and 7,278,029.10 is: 10,917,043.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072,807.90 : 18,109,211.85 = 7,278,029.10 : x
  2. Step 2: Convert to fraction form
    12,072,807.90/18,109,211.85 = 7,278,029.10/x
  3. Step 3: Cross multiply
    12,072,807.90x = 18,109,211.85 × 7,278,029.10
  4. Step 4: Simplify right side
    12,072,807.90x = 131,799,370,822,364.84
  5. Step 5: Solve for x
    x = 131,799,370,822,364.84/12,072,807.90
  6. Step 6: Final answer
    x = 10,917,043.65

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Similar ratio
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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.