Home / 28,414.14-39,212.01-15,668.79

Finding the Fourth Proportional to 28,414.14, 39,212.01 and 15,668.79

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Solution

The fourth proportional to 28,414.14, 39,212.01 and 15,668.79 is: 21,623.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,414.14 : 39,212.01 = 15,668.79 : x
  2. Step 2: Convert to fraction form
    28,414.14/39,212.01 = 15,668.79/x
  3. Step 3: Cross multiply
    28,414.14x = 39,212.01 × 15,668.79
  4. Step 4: Simplify right side
    28,414.14x = 614,404,750.17
  5. Step 5: Solve for x
    x = 614,404,750.17/28,414.14
  6. Step 6: Final answer
    x = 21,623.20

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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.