Home / 31,414.60-43,348.49-18,668.32

Finding the Fourth Proportional to 31,414.60, 43,348.49 and 18,668.32

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Solution

The fourth proportional to 31,414.60, 43,348.49 and 18,668.32 is: 25,760.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,414.60 : 43,348.49 = 18,668.32 : x
  2. Step 2: Convert to fraction form
    31,414.60/43,348.49 = 18,668.32/x
  3. Step 3: Cross multiply
    31,414.60x = 43,348.49 × 18,668.32
  4. Step 4: Simplify right side
    31,414.60x = 809,243,482.84
  5. Step 5: Solve for x
    x = 809,243,482.84/31,414.60
  6. Step 6: Final answer
    x = 25,760.11

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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.