Home / 39,861.23-55,007.84-21,957.91

Finding the Fourth Proportional to 39,861.23, 55,007.84 and 21,957.91

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Solution

The fourth proportional to 39,861.23, 55,007.84 and 21,957.91 is: 30,301.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,861.23 : 55,007.84 = 21,957.91 : x
  2. Step 2: Convert to fraction form
    39,861.23/55,007.84 = 21,957.91/x
  3. Step 3: Cross multiply
    39,861.23x = 55,007.84 × 21,957.91
  4. Step 4: Simplify right side
    39,861.23x = 1,207,857,117.39
  5. Step 5: Solve for x
    x = 1,207,857,117.39/39,861.23
  6. Step 6: Final answer
    x = 30,301.56

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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.