Home / 27,742.62-38,284.77-15,805.95

Finding the Fourth Proportional to 27,742.62, 38,284.77 and 15,805.95

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Solution

The fourth proportional to 27,742.62, 38,284.77 and 15,805.95 is: 21,812.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,742.62 : 38,284.77 = 15,805.95 : x
  2. Step 2: Convert to fraction form
    27,742.62/38,284.77 = 15,805.95/x
  3. Step 3: Cross multiply
    27,742.62x = 38,284.77 × 15,805.95
  4. Step 4: Simplify right side
    27,742.62x = 605,127,160.38
  5. Step 5: Solve for x
    x = 605,127,160.38/27,742.62
  6. Step 6: Final answer
    x = 21,812.19

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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.