Home / 31,668.14-43,705.04-18,921.38

Finding the Fourth Proportional to 31,668.14, 43,705.04 and 18,921.38

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Solution

The fourth proportional to 31,668.14, 43,705.04 and 18,921.38 is: 26,113.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,668.14 : 43,705.04 = 18,921.38 : x
  2. Step 2: Convert to fraction form
    31,668.14/43,705.04 = 18,921.38/x
  3. Step 3: Cross multiply
    31,668.14x = 43,705.04 × 18,921.38
  4. Step 4: Simplify right side
    31,668.14x = 826,959,356.62
  5. Step 5: Solve for x
    x = 826,959,356.62/31,668.14
  6. Step 6: Final answer
    x = 26,113.29

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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.