Home / 28,610.39-39,481.88-15,689.62

Finding the Fourth Proportional to 28,610.39, 39,481.88 and 15,689.62

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Solution

The fourth proportional to 28,610.39, 39,481.88 and 15,689.62 is: 21,651.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,610.39 : 39,481.88 = 15,689.62 : x
  2. Step 2: Convert to fraction form
    28,610.39/39,481.88 = 15,689.62/x
  3. Step 3: Cross multiply
    28,610.39x = 39,481.88 × 15,689.62
  4. Step 4: Simplify right side
    28,610.39x = 619,455,664.99
  5. Step 5: Solve for x
    x = 619,455,664.99/28,610.39
  6. Step 6: Final answer
    x = 21,651.42

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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.