Home / 27,915.75-38,523.78-15,340.50

Finding the Fourth Proportional to 27,915.75, 38,523.78 and 15,340.50

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Solution

The fourth proportional to 27,915.75, 38,523.78 and 15,340.50 is: 21,169.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,915.75 : 38,523.78 = 15,340.50 : x
  2. Step 2: Convert to fraction form
    27,915.75/38,523.78 = 15,340.50/x
  3. Step 3: Cross multiply
    27,915.75x = 38,523.78 × 15,340.50
  4. Step 4: Simplify right side
    27,915.75x = 590,974,047.09
  5. Step 5: Solve for x
    x = 590,974,047.09/27,915.75
  6. Step 6: Final answer
    x = 21,169.91

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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.