Home / 27,955.53-38,578.75-15,380.28

Finding the Fourth Proportional to 27,955.53, 38,578.75 and 15,380.28

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Solution

The fourth proportional to 27,955.53, 38,578.75 and 15,380.28 is: 21,224.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,955.53 : 38,578.75 = 15,380.28 : x
  2. Step 2: Convert to fraction form
    27,955.53/38,578.75 = 15,380.28/x
  3. Step 3: Cross multiply
    27,955.53x = 38,578.75 × 15,380.28
  4. Step 4: Simplify right side
    27,955.53x = 593,351,938.60
  5. Step 5: Solve for x
    x = 593,351,938.60/27,955.53
  6. Step 6: Final answer
    x = 21,224.85

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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.