Home / 15,315,843,935.40-21,135,864,671.53-8,275,313,567.40

Finding the Fourth Proportional to 15,315,843,935.40, 21,135,864,671.53 and 8,275,313,567.40

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Solution

The fourth proportional to 15,315,843,935.40, 21,135,864,671.53 and 8,275,313,567.40 is: 11,419,932,744.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315,843,935.40 : 21,135,864,671.53 = 8,275,313,567.40 : x
  2. Step 2: Convert to fraction form
    15,315,843,935.40/21,135,864,671.53 = 8,275,313,567.40/x
  3. Step 3: Cross multiply
    15,315,843,935.40x = 21,135,864,671.53 × 8,275,313,567.40
  4. Step 4: Simplify right side
    15,315,843,935.40x = 174,905,907,675,019,116,544
  5. Step 5: Solve for x
    x = 174,905,907,675,019,116,544/15,315,843,935.40
  6. Step 6: Final answer
    x = 11,419,932,744.99

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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.