Home / 39,719.50-54,813.29-21,814.88

Finding the Fourth Proportional to 39,719.50, 54,813.29 and 21,814.88

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Solution

The fourth proportional to 39,719.50, 54,813.29 and 21,814.88 is: 30,104.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,719.50 : 54,813.29 = 21,814.88 : x
  2. Step 2: Convert to fraction form
    39,719.50/54,813.29 = 21,814.88/x
  3. Step 3: Cross multiply
    39,719.50x = 54,813.29 × 21,814.88
  4. Step 4: Simplify right side
    39,719.50x = 1,195,744,960.61
  5. Step 5: Solve for x
    x = 1,195,744,960.61/39,719.50
  6. Step 6: Final answer
    x = 30,104.74

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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.