Home / 18,926,102.36-28,389,378.82-5,278,418.38

Finding the Fourth Proportional to 18,926,102.36, 28,389,378.82 and 5,278,418.38

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Solution

The fourth proportional to 18,926,102.36, 28,389,378.82 and 5,278,418.38 is: 7,917,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926,102.36 : 28,389,378.82 = 5,278,418.38 : x
  2. Step 2: Convert to fraction form
    18,926,102.36/28,389,378.82 = 5,278,418.38/x
  3. Step 3: Cross multiply
    18,926,102.36x = 28,389,378.82 × 5,278,418.38
  4. Step 4: Simplify right side
    18,926,102.36x = 149,851,018,883,376.09
  5. Step 5: Solve for x
    x = 149,851,018,883,376.09/18,926,102.36
  6. Step 6: Final answer
    x = 7,917,690.40

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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.