Home / 28,185.60-38,896.16-15,610.44

Finding the Fourth Proportional to 28,185.60, 38,896.16 and 15,610.44

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Solution

The fourth proportional to 28,185.60, 38,896.16 and 15,610.44 is: 21,542.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,185.60 : 38,896.16 = 15,610.44 : x
  2. Step 2: Convert to fraction form
    28,185.60/38,896.16 = 15,610.44/x
  3. Step 3: Cross multiply
    28,185.60x = 38,896.16 × 15,610.44
  4. Step 4: Simplify right side
    28,185.60x = 607,186,171.91
  5. Step 5: Solve for x
    x = 607,186,171.91/28,185.60
  6. Step 6: Final answer
    x = 21,542.42

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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.