Home / 20,377.41-28,127.70-12,836.37

Finding the Fourth Proportional to 20,377.41, 28,127.70 and 12,836.37

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Solution

The fourth proportional to 20,377.41, 28,127.70 and 12,836.37 is: 17,718.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.41 : 28,127.70 = 12,836.37 : x
  2. Step 2: Convert to fraction form
    20,377.41/28,127.70 = 12,836.37/x
  3. Step 3: Cross multiply
    20,377.41x = 28,127.70 × 12,836.37
  4. Step 4: Simplify right side
    20,377.41x = 361,057,564.45
  5. Step 5: Solve for x
    x = 361,057,564.45/20,377.41
  6. Step 6: Final answer
    x = 17,718.52

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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.