Home / 18,677,260.80-28,015,891.20-11,465,409.60

Finding the Fourth Proportional to 18,677,260.80, 28,015,891.20 and 11,465,409.60

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Solution

The fourth proportional to 18,677,260.80, 28,015,891.20 and 11,465,409.60 is: 17,198,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677,260.80 : 28,015,891.20 = 11,465,409.60 : x
  2. Step 2: Convert to fraction form
    18,677,260.80/28,015,891.20 = 11,465,409.60/x
  3. Step 3: Cross multiply
    18,677,260.80x = 28,015,891.20 × 11,465,409.60
  4. Step 4: Simplify right side
    18,677,260.80x = 321,213,667,917,035.50
  5. Step 5: Solve for x
    x = 321,213,667,917,035.50/18,677,260.80
  6. Step 6: Final answer
    x = 17,198,114.40

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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.