Home / 18,165,249.95-25,067,861.78-9,905,291.55

Finding the Fourth Proportional to 18,165,249.95, 25,067,861.78 and 9,905,291.55

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Solution

The fourth proportional to 18,165,249.95, 25,067,861.78 and 9,905,291.55 is: 13,669,202.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,165,249.95 : 25,067,861.78 = 9,905,291.55 : x
  2. Step 2: Convert to fraction form
    18,165,249.95/25,067,861.78 = 9,905,291.55/x
  3. Step 3: Cross multiply
    18,165,249.95x = 25,067,861.78 × 9,905,291.55
  4. Step 4: Simplify right side
    18,165,249.95x = 248,304,479,416,475.50
  5. Step 5: Solve for x
    x = 248,304,479,416,475.50/18,165,249.95
  6. Step 6: Final answer
    x = 13,669,202.47

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1.5x scale

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.