Home / 34,721.80-47,914.70-20,379.68

Finding the Fourth Proportional to 34,721.80, 47,914.70 and 20,379.68

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Solution

The fourth proportional to 34,721.80, 47,914.70 and 20,379.68 is: 28,123.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,721.80 : 47,914.70 = 20,379.68 : x
  2. Step 2: Convert to fraction form
    34,721.80/47,914.70 = 20,379.68/x
  3. Step 3: Cross multiply
    34,721.80x = 47,914.70 × 20,379.68
  4. Step 4: Simplify right side
    34,721.80x = 976,486,253.30
  5. Step 5: Solve for x
    x = 976,486,253.30/34,721.80
  6. Step 6: Final answer
    x = 28,123.15

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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.