Home / 20,677.63-28,519.85-13,117.44

Finding the Fourth Proportional to 20,677.63, 28,519.85 and 13,117.44

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Solution

The fourth proportional to 20,677.63, 28,519.85 and 13,117.44 is: 18,092.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.63 : 28,519.85 = 13,117.44 : x
  2. Step 2: Convert to fraction form
    20,677.63/28,519.85 = 13,117.44/x
  3. Step 3: Cross multiply
    20,677.63x = 28,519.85 × 13,117.44
  4. Step 4: Simplify right side
    20,677.63x = 374,107,487.14
  5. Step 5: Solve for x
    x = 374,107,487.14/20,677.63
  6. Step 6: Final answer
    x = 18,092.38

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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.