Home / 15,380,791.20-23,071,186.80-12,880,029.60

Finding the Fourth Proportional to 15,380,791.20, 23,071,186.80 and 12,880,029.60

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Solution

The fourth proportional to 15,380,791.20, 23,071,186.80 and 12,880,029.60 is: 19,320,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380,791.20 : 23,071,186.80 = 12,880,029.60 : x
  2. Step 2: Convert to fraction form
    15,380,791.20/23,071,186.80 = 12,880,029.60/x
  3. Step 3: Cross multiply
    15,380,791.20x = 23,071,186.80 × 12,880,029.60
  4. Step 4: Simplify right side
    15,380,791.20x = 297,157,568,891,129.25
  5. Step 5: Solve for x
    x = 297,157,568,891,129.25/15,380,791.20
  6. Step 6: Final answer
    x = 19,320,044.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.