Home / 20,728.73-28,583.06-14,002.68

Finding the Fourth Proportional to 20,728.73, 28,583.06 and 14,002.68

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Solution

The fourth proportional to 20,728.73, 28,583.06 and 14,002.68 is: 19,308.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.73 : 28,583.06 = 14,002.68 : x
  2. Step 2: Convert to fraction form
    20,728.73/28,583.06 = 14,002.68/x
  3. Step 3: Cross multiply
    20,728.73x = 28,583.06 × 14,002.68
  4. Step 4: Simplify right side
    20,728.73x = 400,239,372.59
  5. Step 5: Solve for x
    x = 400,239,372.59/20,728.73
  6. Step 6: Final answer
    x = 19,308.44

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1.5x scale

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.