Home / 20,377.98-28,121.13-11,303.31

Finding the Fourth Proportional to 20,377.98, 28,121.13 and 11,303.31

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Solution

The fourth proportional to 20,377.98, 28,121.13 and 11,303.31 is: 15,598.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.98 : 28,121.13 = 11,303.31 : x
  2. Step 2: Convert to fraction form
    20,377.98/28,121.13 = 11,303.31/x
  3. Step 3: Cross multiply
    20,377.98x = 28,121.13 × 11,303.31
  4. Step 4: Simplify right side
    20,377.98x = 317,861,849.94
  5. Step 5: Solve for x
    x = 317,861,849.94/20,377.98
  6. Step 6: Final answer
    x = 15,598.30

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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.