Home / 20,556.57-28,366.10-16,317.89

Finding the Fourth Proportional to 20,556.57, 28,366.10 and 16,317.89

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Solution

The fourth proportional to 20,556.57, 28,366.10 and 16,317.89 is: 22,517.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.57 : 28,366.10 = 16,317.89 : x
  2. Step 2: Convert to fraction form
    20,556.57/28,366.10 = 16,317.89/x
  3. Step 3: Cross multiply
    20,556.57x = 28,366.10 × 16,317.89
  4. Step 4: Simplify right side
    20,556.57x = 462,874,676.11
  5. Step 5: Solve for x
    x = 462,874,676.11/20,556.57
  6. Step 6: Final answer
    x = 22,517.12

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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.