Home / 20,350.34-28,093.19-13,555.66

Finding the Fourth Proportional to 20,350.34, 28,093.19 and 13,555.66

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Solution

The fourth proportional to 20,350.34, 28,093.19 and 13,555.66 is: 18,713.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.34 : 28,093.19 = 13,555.66 : x
  2. Step 2: Convert to fraction form
    20,350.34/28,093.19 = 13,555.66/x
  3. Step 3: Cross multiply
    20,350.34x = 28,093.19 × 13,555.66
  4. Step 4: Simplify right side
    20,350.34x = 380,821,593.94
  5. Step 5: Solve for x
    x = 380,821,593.94/20,350.34
  6. Step 6: Final answer
    x = 18,713.28

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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.