Home / 28,212.39-38,932.97-15,637.14

Finding the Fourth Proportional to 28,212.39, 38,932.97 and 15,637.14

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Solution

The fourth proportional to 28,212.39, 38,932.97 and 15,637.14 is: 21,579.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.39 : 38,932.97 = 15,637.14 : x
  2. Step 2: Convert to fraction form
    28,212.39/38,932.97 = 15,637.14/x
  3. Step 3: Cross multiply
    28,212.39x = 38,932.97 × 15,637.14
  4. Step 4: Simplify right side
    28,212.39x = 608,800,107.84
  5. Step 5: Solve for x
    x = 608,800,107.84/28,212.39
  6. Step 6: Final answer
    x = 21,579.18

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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.