Home / 28,228.87-38,956.38-15,481.25

Finding the Fourth Proportional to 28,228.87, 38,956.38 and 15,481.25

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Solution

The fourth proportional to 28,228.87, 38,956.38 and 15,481.25 is: 21,364.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.87 : 38,956.38 = 15,481.25 : x
  2. Step 2: Convert to fraction form
    28,228.87/38,956.38 = 15,481.25/x
  3. Step 3: Cross multiply
    28,228.87x = 38,956.38 × 15,481.25
  4. Step 4: Simplify right side
    28,228.87x = 603,093,457.88
  5. Step 5: Solve for x
    x = 603,093,457.88/28,228.87
  6. Step 6: Final answer
    x = 21,364.42

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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.