Home / 12,090,041.60-18,135,062.40-11,978,067.20

Finding the Fourth Proportional to 12,090,041.60, 18,135,062.40 and 11,978,067.20

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Solution

The fourth proportional to 12,090,041.60, 18,135,062.40 and 11,978,067.20 is: 17,967,100.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090,041.60 : 18,135,062.40 = 11,978,067.20 : x
  2. Step 2: Convert to fraction form
    12,090,041.60/18,135,062.40 = 11,978,067.20/x
  3. Step 3: Cross multiply
    12,090,041.60x = 18,135,062.40 × 11,978,067.20
  4. Step 4: Simplify right side
    12,090,041.60x = 217,222,996,103,393.25
  5. Step 5: Solve for x
    x = 217,222,996,103,393.25/12,090,041.60
  6. Step 6: Final answer
    x = 17,967,100.80

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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.