Home / 12,915,268.18-19,372,926.39-12,126,078.16

Finding the Fourth Proportional to 12,915,268.18, 19,372,926.39 and 12,126,078.16

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Solution

The fourth proportional to 12,915,268.18, 19,372,926.39 and 12,126,078.16 is: 18,189,139.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915,268.18 : 19,372,926.39 = 12,126,078.16 : x
  2. Step 2: Convert to fraction form
    12,915,268.18/19,372,926.39 = 12,126,078.16/x
  3. Step 3: Cross multiply
    12,915,268.18x = 19,372,926.39 × 12,126,078.16
  4. Step 4: Simplify right side
    12,915,268.18x = 234,917,619,593,066.66
  5. Step 5: Solve for x
    x = 234,917,619,593,066.66/12,915,268.18
  6. Step 6: Final answer
    x = 18,189,139.89

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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.