Home / 20,677.05-28,534.19-11,245.61

Finding the Fourth Proportional to 20,677.05, 28,534.19 and 11,245.61

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Solution

The fourth proportional to 20,677.05, 28,534.19 and 11,245.61 is: 15,518.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.05 : 28,534.19 = 11,245.61 : x
  2. Step 2: Convert to fraction form
    20,677.05/28,534.19 = 11,245.61/x
  3. Step 3: Cross multiply
    20,677.05x = 28,534.19 × 11,245.61
  4. Step 4: Simplify right side
    20,677.05x = 320,884,173.51
  5. Step 5: Solve for x
    x = 320,884,173.51/20,677.05
  6. Step 6: Final answer
    x = 15,518.86

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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.