Home / 15,315,843,946.59-21,135,864,686.97-8,275,313,578.59

Finding the Fourth Proportional to 15,315,843,946.59, 21,135,864,686.97 and 8,275,313,578.59

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Solution

The fourth proportional to 15,315,843,946.59, 21,135,864,686.97 and 8,275,313,578.59 is: 11,419,932,760.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315,843,946.59 : 21,135,864,686.97 = 8,275,313,578.59 : x
  2. Step 2: Convert to fraction form
    15,315,843,946.59/21,135,864,686.97 = 8,275,313,578.59/x
  3. Step 3: Cross multiply
    15,315,843,946.59x = 21,135,864,686.97 × 8,275,313,578.59
  4. Step 4: Simplify right side
    15,315,843,946.59x = 174,905,908,039,218,036,736
  5. Step 5: Solve for x
    x = 174,905,908,039,218,036,736/15,315,843,946.59
  6. Step 6: Final answer
    x = 11,419,932,760.43

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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.