Home / 15,685,995,217.32-21,647,439,192.78-8,821,551,845.70

Finding the Fourth Proportional to 15,685,995,217.32, 21,647,439,192.78 and 8,821,551,845.70

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Solution

The fourth proportional to 15,685,995,217.32, 21,647,439,192.78 and 8,821,551,845.70 is: 12,174,172,216.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685,995,217.32 : 21,647,439,192.78 = 8,821,551,845.70 : x
  2. Step 2: Convert to fraction form
    15,685,995,217.32/21,647,439,192.78 = 8,821,551,845.70/x
  3. Step 3: Cross multiply
    15,685,995,217.32x = 21,647,439,192.78 × 8,821,551,845.70
  4. Step 4: Simplify right side
    15,685,995,217.32x = 190,964,007,165,746,937,856
  5. Step 5: Solve for x
    x = 190,964,007,165,746,937,856/15,685,995,217.32
  6. Step 6: Final answer
    x = 12,174,172,216.68

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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.