Home / 27,759.88-38,308.74-15,185.32

Finding the Fourth Proportional to 27,759.88, 38,308.74 and 15,185.32

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Solution

The fourth proportional to 27,759.88, 38,308.74 and 15,185.32 is: 20,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,759.88 : 38,308.74 = 15,185.32 : x
  2. Step 2: Convert to fraction form
    27,759.88/38,308.74 = 15,185.32/x
  3. Step 3: Cross multiply
    27,759.88x = 38,308.74 × 15,185.32
  4. Step 4: Simplify right side
    27,759.88x = 581,730,475.70
  5. Step 5: Solve for x
    x = 581,730,475.70/27,759.88
  6. Step 6: Final answer
    x = 20,955.80

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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.