Home / 28,394.31-39,184.41-15,647.96

Finding the Fourth Proportional to 28,394.31, 39,184.41 and 15,647.96

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Solution

The fourth proportional to 28,394.31, 39,184.41 and 15,647.96 is: 21,594.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,394.31 : 39,184.41 = 15,647.96 : x
  2. Step 2: Convert to fraction form
    28,394.31/39,184.41 = 15,647.96/x
  3. Step 3: Cross multiply
    28,394.31x = 39,184.41 × 15,647.96
  4. Step 4: Simplify right side
    28,394.31x = 613,155,884.38
  5. Step 5: Solve for x
    x = 613,155,884.38/28,394.31
  6. Step 6: Final answer
    x = 21,594.32

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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.