Home / 20,675.39-28,534.75-20,112.46

Finding the Fourth Proportional to 20,675.39, 28,534.75 and 20,112.46

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Solution

The fourth proportional to 20,675.39, 28,534.75 and 20,112.46 is: 27,757.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.39 : 28,534.75 = 20,112.46 : x
  2. Step 2: Convert to fraction form
    20,675.39/28,534.75 = 20,112.46/x
  3. Step 3: Cross multiply
    20,675.39x = 28,534.75 × 20,112.46
  4. Step 4: Simplify right side
    20,675.39x = 573,904,017.99
  5. Step 5: Solve for x
    x = 573,904,017.99/20,675.39
  6. Step 6: Final answer
    x = 27,757.84

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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.