Home / 27,840.88-38,421.12-15,265.84

Finding the Fourth Proportional to 27,840.88, 38,421.12 and 15,265.84

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Solution

The fourth proportional to 27,840.88, 38,421.12 and 15,265.84 is: 21,067.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,840.88 : 38,421.12 = 15,265.84 : x
  2. Step 2: Convert to fraction form
    27,840.88/38,421.12 = 15,265.84/x
  3. Step 3: Cross multiply
    27,840.88x = 38,421.12 × 15,265.84
  4. Step 4: Simplify right side
    27,840.88x = 586,530,670.54
  5. Step 5: Solve for x
    x = 586,530,670.54/27,840.88
  6. Step 6: Final answer
    x = 21,067.25

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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.