Home / 18,772.39-28,195.04-13,822.48

Finding the Fourth Proportional to 18,772.39, 28,195.04 and 13,822.48

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Solution

The fourth proportional to 18,772.39, 28,195.04 and 13,822.48 is: 20,760.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.39 : 28,195.04 = 13,822.48 : x
  2. Step 2: Convert to fraction form
    18,772.39/28,195.04 = 13,822.48/x
  3. Step 3: Cross multiply
    18,772.39x = 28,195.04 × 13,822.48
  4. Step 4: Simplify right side
    18,772.39x = 389,725,307.39
  5. Step 5: Solve for x
    x = 389,725,307.39/18,772.39
  6. Step 6: Final answer
    x = 20,760.56

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1.5x scale

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.