Home / 27,748.62-38,293.05-15,811.95

Finding the Fourth Proportional to 27,748.62, 38,293.05 and 15,811.95

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Solution

The fourth proportional to 27,748.62, 38,293.05 and 15,811.95 is: 21,820.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,748.62 : 38,293.05 = 15,811.95 : x
  2. Step 2: Convert to fraction form
    27,748.62/38,293.05 = 15,811.95/x
  3. Step 3: Cross multiply
    27,748.62x = 38,293.05 × 15,811.95
  4. Step 4: Simplify right side
    27,748.62x = 605,487,791.95
  5. Step 5: Solve for x
    x = 605,487,791.95/27,748.62
  6. Step 6: Final answer
    x = 21,820.47

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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.