Home / 20,712.67-28,600.33-16,884.90

Finding the Fourth Proportional to 20,712.67, 28,600.33 and 16,884.90

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Solution

The fourth proportional to 20,712.67, 28,600.33 and 16,884.90 is: 23,314.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.67 : 28,600.33 = 16,884.90 : x
  2. Step 2: Convert to fraction form
    20,712.67/28,600.33 = 16,884.90/x
  3. Step 3: Cross multiply
    20,712.67x = 28,600.33 × 16,884.90
  4. Step 4: Simplify right side
    20,712.67x = 482,913,712.02
  5. Step 5: Solve for x
    x = 482,913,712.02/20,712.67
  6. Step 6: Final answer
    x = 23,314.89

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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.