Home / 27,963.90-38,590.19-15,388.65

Finding the Fourth Proportional to 27,963.90, 38,590.19 and 15,388.65

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Solution

The fourth proportional to 27,963.90, 38,590.19 and 15,388.65 is: 21,236.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,963.90 : 38,590.19 = 15,388.65 : x
  2. Step 2: Convert to fraction form
    27,963.90/38,590.19 = 15,388.65/x
  3. Step 3: Cross multiply
    27,963.90x = 38,590.19 × 15,388.65
  4. Step 4: Simplify right side
    27,963.90x = 593,850,850.40
  5. Step 5: Solve for x
    x = 593,850,850.40/27,963.90
  6. Step 6: Final answer
    x = 21,236.34

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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.