Home / 12,080,800.80-18,121,201.20-11,520,928.80

Finding the Fourth Proportional to 12,080,800.80, 18,121,201.20 and 11,520,928.80

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Solution

The fourth proportional to 12,080,800.80, 18,121,201.20 and 11,520,928.80 is: 17,281,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,080,800.80 : 18,121,201.20 = 11,520,928.80 : x
  2. Step 2: Convert to fraction form
    12,080,800.80/18,121,201.20 = 11,520,928.80/x
  3. Step 3: Cross multiply
    12,080,800.80x = 18,121,201.20 × 11,520,928.80
  4. Step 4: Simplify right side
    12,080,800.80x = 208,773,068,795,674.56
  5. Step 5: Solve for x
    x = 208,773,068,795,674.56/12,080,800.80
  6. Step 6: Final answer
    x = 17,281,393.20

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Double scale
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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.