Home / 28,179.72-38,888.62-15,433.44

Finding the Fourth Proportional to 28,179.72, 38,888.62 and 15,433.44

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Solution

The fourth proportional to 28,179.72, 38,888.62 and 15,433.44 is: 21,298.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.72 : 38,888.62 = 15,433.44 : x
  2. Step 2: Convert to fraction form
    28,179.72/38,888.62 = 15,433.44/x
  3. Step 3: Cross multiply
    28,179.72x = 38,888.62 × 15,433.44
  4. Step 4: Simplify right side
    28,179.72x = 600,185,183.45
  5. Step 5: Solve for x
    x = 600,185,183.45/28,179.72
  6. Step 6: Final answer
    x = 21,298.48

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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.