Home / 39,861.59-55,011.49-21,956.58

Finding the Fourth Proportional to 39,861.59, 55,011.49 and 21,956.58

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Solution

The fourth proportional to 39,861.59, 55,011.49 and 21,956.58 is: 30,301.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,861.59 : 55,011.49 = 21,956.58 : x
  2. Step 2: Convert to fraction form
    39,861.59/55,011.49 = 21,956.58/x
  3. Step 3: Cross multiply
    39,861.59x = 55,011.49 × 21,956.58
  4. Step 4: Simplify right side
    39,861.59x = 1,207,864,126.21
  5. Step 5: Solve for x
    x = 1,207,864,126.21/39,861.59
  6. Step 6: Final answer
    x = 30,301.46

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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.