Home / 25,721.90-38,585.94-9,078.50

Finding the Fourth Proportional to 25,721.90, 38,585.94 and 9,078.50

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Solution

The fourth proportional to 25,721.90, 38,585.94 and 9,078.50 is: 13,618.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,721.90 : 38,585.94 = 9,078.50 : x
  2. Step 2: Convert to fraction form
    25,721.90/38,585.94 = 9,078.50/x
  3. Step 3: Cross multiply
    25,721.90x = 38,585.94 × 9,078.50
  4. Step 4: Simplify right side
    25,721.90x = 350,302,456.29
  5. Step 5: Solve for x
    x = 350,302,456.29/25,721.90
  6. Step 6: Final answer
    x = 13,618.84

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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.