Home / 28,204.92-38,922.72-15,629.76

Finding the Fourth Proportional to 28,204.92, 38,922.72 and 15,629.76

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Solution

The fourth proportional to 28,204.92, 38,922.72 and 15,629.76 is: 21,569.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.92 : 38,922.72 = 15,629.76 : x
  2. Step 2: Convert to fraction form
    28,204.92/38,922.72 = 15,629.76/x
  3. Step 3: Cross multiply
    28,204.92x = 38,922.72 × 15,629.76
  4. Step 4: Simplify right side
    28,204.92x = 608,352,772.15
  5. Step 5: Solve for x
    x = 608,352,772.15/28,204.92
  6. Step 6: Final answer
    x = 21,569.03

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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.