Home / 20,671.73-28,526.15-12,174.21

Finding the Fourth Proportional to 20,671.73, 28,526.15 and 12,174.21

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Solution

The fourth proportional to 20,671.73, 28,526.15 and 12,174.21 is: 16,799.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.73 : 28,526.15 = 12,174.21 : x
  2. Step 2: Convert to fraction form
    20,671.73/28,526.15 = 12,174.21/x
  3. Step 3: Cross multiply
    20,671.73x = 28,526.15 × 12,174.21
  4. Step 4: Simplify right side
    20,671.73x = 347,283,371.03
  5. Step 5: Solve for x
    x = 347,283,371.03/20,671.73
  6. Step 6: Final answer
    x = 16,799.92

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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.