Home / 20,694.36-28,564.24-13,525.32

Finding the Fourth Proportional to 20,694.36, 28,564.24 and 13,525.32

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Solution

The fourth proportional to 20,694.36, 28,564.24 and 13,525.32 is: 18,668.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.36 : 28,564.24 = 13,525.32 : x
  2. Step 2: Convert to fraction form
    20,694.36/28,564.24 = 13,525.32/x
  3. Step 3: Cross multiply
    20,694.36x = 28,564.24 × 13,525.32
  4. Step 4: Simplify right side
    20,694.36x = 386,340,486.56
  5. Step 5: Solve for x
    x = 386,340,486.56/20,694.36
  6. Step 6: Final answer
    x = 18,668.88

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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.