Home / 28,414.64-39,212.48-15,668.28

Finding the Fourth Proportional to 28,414.64, 39,212.48 and 15,668.28

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Solution

The fourth proportional to 28,414.64, 39,212.48 and 15,668.28 is: 21,622.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,414.64 : 39,212.48 = 15,668.28 : x
  2. Step 2: Convert to fraction form
    28,414.64/39,212.48 = 15,668.28/x
  3. Step 3: Cross multiply
    28,414.64x = 39,212.48 × 15,668.28
  4. Step 4: Simplify right side
    28,414.64x = 614,392,116.13
  5. Step 5: Solve for x
    x = 614,392,116.13/28,414.64
  6. Step 6: Final answer
    x = 21,622.38

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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.