Home / 15,366,121.92-21,204,940.32-8,490,427.20

Finding the Fourth Proportional to 15,366,121.92, 21,204,940.32 and 8,490,427.20

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Solution

The fourth proportional to 15,366,121.92, 21,204,940.32 and 8,490,427.20 is: 11,716,619.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,366,121.92 : 21,204,940.32 = 8,490,427.20 : x
  2. Step 2: Convert to fraction form
    15,366,121.92/21,204,940.32 = 8,490,427.20/x
  3. Step 3: Cross multiply
    15,366,121.92x = 21,204,940.32 × 8,490,427.20
  4. Step 4: Simplify right side
    15,366,121.92x = 180,039,002,067,304.69
  5. Step 5: Solve for x
    x = 180,039,002,067,304.69/15,366,121.92
  6. Step 6: Final answer
    x = 11,716,619.39

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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.