Home / 20,792,065.49-28,694,126.55-11,972,826.70

Finding the Fourth Proportional to 20,792,065.49, 28,694,126.55 and 11,972,826.70

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Solution

The fourth proportional to 20,792,065.49, 28,694,126.55 and 11,972,826.70 is: 16,523,120.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792,065.49 : 28,694,126.55 = 11,972,826.70 : x
  2. Step 2: Convert to fraction form
    20,792,065.49/28,694,126.55 = 11,972,826.70/x
  3. Step 3: Cross multiply
    20,792,065.49x = 28,694,126.55 × 11,972,826.70
  4. Step 4: Simplify right side
    20,792,065.49x = 343,549,804,491,018.88
  5. Step 5: Solve for x
    x = 343,549,804,491,018.88/20,792,065.49
  6. Step 6: Final answer
    x = 16,523,120.55

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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.