Home / 27,880.53-38,474.37-15,305.28

Finding the Fourth Proportional to 27,880.53, 38,474.37 and 15,305.28

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Solution

The fourth proportional to 27,880.53, 38,474.37 and 15,305.28 is: 21,120.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,880.53 : 38,474.37 = 15,305.28 : x
  2. Step 2: Convert to fraction form
    27,880.53/38,474.37 = 15,305.28/x
  3. Step 3: Cross multiply
    27,880.53x = 38,474.37 × 15,305.28
  4. Step 4: Simplify right side
    27,880.53x = 588,861,005.67
  5. Step 5: Solve for x
    x = 588,861,005.67/27,880.53
  6. Step 6: Final answer
    x = 21,120.87

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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.