Home / 27,985.58-38,619.14-15,238.54

Finding the Fourth Proportional to 27,985.58, 38,619.14 and 15,238.54

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Solution

The fourth proportional to 27,985.58, 38,619.14 and 15,238.54 is: 21,028.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,985.58 : 38,619.14 = 15,238.54 : x
  2. Step 2: Convert to fraction form
    27,985.58/38,619.14 = 15,238.54/x
  3. Step 3: Cross multiply
    27,985.58x = 38,619.14 × 15,238.54
  4. Step 4: Simplify right side
    27,985.58x = 588,499,309.66
  5. Step 5: Solve for x
    x = 588,499,309.66/27,985.58
  6. Step 6: Final answer
    x = 21,028.66

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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.