Home / 27,986.12-38,619.46-15,408.52

Finding the Fourth Proportional to 27,986.12, 38,619.46 and 15,408.52

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Solution

The fourth proportional to 27,986.12, 38,619.46 and 15,408.52 is: 21,262.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,986.12 : 38,619.46 = 15,408.52 : x
  2. Step 2: Convert to fraction form
    27,986.12/38,619.46 = 15,408.52/x
  3. Step 3: Cross multiply
    27,986.12x = 38,619.46 × 15,408.52
  4. Step 4: Simplify right side
    27,986.12x = 595,068,721.80
  5. Step 5: Solve for x
    x = 595,068,721.80/27,986.12
  6. Step 6: Final answer
    x = 21,262.99

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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.