Home / 20,755.74-28,634.31-13,206.24

Finding the Fourth Proportional to 20,755.74, 28,634.31 and 13,206.24

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Solution

The fourth proportional to 20,755.74, 28,634.31 and 13,206.24 is: 18,219.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.74 : 28,634.31 = 13,206.24 : x
  2. Step 2: Convert to fraction form
    20,755.74/28,634.31 = 13,206.24/x
  3. Step 3: Cross multiply
    20,755.74x = 28,634.31 × 13,206.24
  4. Step 4: Simplify right side
    20,755.74x = 378,151,570.09
  5. Step 5: Solve for x
    x = 378,151,570.09/20,755.74
  6. Step 6: Final answer
    x = 18,219.13

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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.