Home / 18,129,851.64-25,021,002.60-13,538,201.40

Finding the Fourth Proportional to 18,129,851.64, 25,021,002.60 and 13,538,201.40

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Solution

The fourth proportional to 18,129,851.64, 25,021,002.60 and 13,538,201.40 is: 18,684,067.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129,851.64 : 25,021,002.60 = 13,538,201.40 : x
  2. Step 2: Convert to fraction form
    18,129,851.64/25,021,002.60 = 13,538,201.40/x
  3. Step 3: Cross multiply
    18,129,851.64x = 25,021,002.60 × 13,538,201.40
  4. Step 4: Simplify right side
    18,129,851.64x = 338,739,372,428,723.69
  5. Step 5: Solve for x
    x = 338,739,372,428,723.69/18,129,851.64
  6. Step 6: Final answer
    x = 18,684,067.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.