Home / 39,860.55-55,007.91-21,956.18

Finding the Fourth Proportional to 39,860.55, 55,007.91 and 21,956.18

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Solution

The fourth proportional to 39,860.55, 55,007.91 and 21,956.18 is: 30,299.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,860.55 : 55,007.91 = 21,956.18 : x
  2. Step 2: Convert to fraction form
    39,860.55/55,007.91 = 21,956.18/x
  3. Step 3: Cross multiply
    39,860.55x = 55,007.91 × 21,956.18
  4. Step 4: Simplify right side
    39,860.55x = 1,207,763,298.34
  5. Step 5: Solve for x
    x = 1,207,763,298.34/39,860.55
  6. Step 6: Final answer
    x = 30,299.71

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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.