Home / 20,727-28,604.40-11,295.36

Finding the Fourth Proportional to 20,727, 28,604.40 and 11,295.36

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Solution

The fourth proportional to 20,727, 28,604.40 and 11,295.36 is: 15,588.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727 : 28,604.40 = 11,295.36 : x
  2. Step 2: Convert to fraction form
    20,727/28,604.40 = 11,295.36/x
  3. Step 3: Cross multiply
    20,727x = 28,604.40 × 11,295.36
  4. Step 4: Simplify right side
    20,727x = 323,096,995.58
  5. Step 5: Solve for x
    x = 323,096,995.58/20,727
  6. Step 6: Final answer
    x = 15,588.22

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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.