Home / 14,990,721.39-20,687,202.43-8,115,203.45

Finding the Fourth Proportional to 14,990,721.39, 20,687,202.43 and 8,115,203.45

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Solution

The fourth proportional to 14,990,721.39, 20,687,202.43 and 8,115,203.45 is: 11,198,984.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990,721.39 : 20,687,202.43 = 8,115,203.45 : x
  2. Step 2: Convert to fraction form
    14,990,721.39/20,687,202.43 = 8,115,203.45/x
  3. Step 3: Cross multiply
    14,990,721.39x = 20,687,202.43 × 8,115,203.45
  4. Step 4: Simplify right side
    14,990,721.39x = 167,880,856,530,784.38
  5. Step 5: Solve for x
    x = 167,880,856,530,784.38/14,990,721.39
  6. Step 6: Final answer
    x = 11,198,984.50

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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.