Home / 19,209.25-28,781.11-13,635.01

Finding the Fourth Proportional to 19,209.25, 28,781.11 and 13,635.01

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Solution

The fourth proportional to 19,209.25, 28,781.11 and 13,635.01 is: 20,429.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.25 : 28,781.11 = 13,635.01 : x
  2. Step 2: Convert to fraction form
    19,209.25/28,781.11 = 13,635.01/x
  3. Step 3: Cross multiply
    19,209.25x = 28,781.11 × 13,635.01
  4. Step 4: Simplify right side
    19,209.25x = 392,430,722.66
  5. Step 5: Solve for x
    x = 392,430,722.66/19,209.25
  6. Step 6: Final answer
    x = 20,429.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.