Home / 28,648.78-39,535.62-15,902.20

Finding the Fourth Proportional to 28,648.78, 39,535.62 and 15,902.20

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Solution

The fourth proportional to 28,648.78, 39,535.62 and 15,902.20 is: 21,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.78 : 39,535.62 = 15,902.20 : x
  2. Step 2: Convert to fraction form
    28,648.78/39,535.62 = 15,902.20/x
  3. Step 3: Cross multiply
    28,648.78x = 39,535.62 × 15,902.20
  4. Step 4: Simplify right side
    28,648.78x = 628,703,336.36
  5. Step 5: Solve for x
    x = 628,703,336.36/28,648.78
  6. Step 6: Final answer
    x = 21,945.20

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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.