Home / 12,126,771.80-18,190,157.70-7,276,880.60

Finding the Fourth Proportional to 12,126,771.80, 18,190,157.70 and 7,276,880.60

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Solution

The fourth proportional to 12,126,771.80, 18,190,157.70 and 7,276,880.60 is: 10,915,320.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126,771.80 : 18,190,157.70 = 7,276,880.60 : x
  2. Step 2: Convert to fraction form
    12,126,771.80/18,190,157.70 = 7,276,880.60/x
  3. Step 3: Cross multiply
    12,126,771.80x = 18,190,157.70 × 7,276,880.60
  4. Step 4: Simplify right side
    12,126,771.80x = 132,367,605,678,070.61
  5. Step 5: Solve for x
    x = 132,367,605,678,070.61/12,126,771.80
  6. Step 6: Final answer
    x = 10,915,320.90

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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.