Home / 27,963.76-38,589.04-15,388.48

Finding the Fourth Proportional to 27,963.76, 38,589.04 and 15,388.48

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Solution

The fourth proportional to 27,963.76, 38,589.04 and 15,388.48 is: 21,235.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,963.76 : 38,589.04 = 15,388.48 : x
  2. Step 2: Convert to fraction form
    27,963.76/38,589.04 = 15,388.48/x
  3. Step 3: Cross multiply
    27,963.76x = 38,589.04 × 15,388.48
  4. Step 4: Simplify right side
    27,963.76x = 593,826,670.26
  5. Step 5: Solve for x
    x = 593,826,670.26/27,963.76
  6. Step 6: Final answer
    x = 21,235.58

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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.