Home / 27,915.40-38,522.82-15,339.88

Finding the Fourth Proportional to 27,915.40, 38,522.82 and 15,339.88

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Solution

The fourth proportional to 27,915.40, 38,522.82 and 15,339.88 is: 21,168.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,915.40 : 38,522.82 = 15,339.88 : x
  2. Step 2: Convert to fraction form
    27,915.40/38,522.82 = 15,339.88/x
  3. Step 3: Cross multiply
    27,915.40x = 38,522.82 × 15,339.88
  4. Step 4: Simplify right side
    27,915.40x = 590,935,359.36
  5. Step 5: Solve for x
    x = 590,935,359.36/27,915.40
  6. Step 6: Final answer
    x = 21,168.79

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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.