Home / 20,697.08-28,561.12-11,265.68

Finding the Fourth Proportional to 20,697.08, 28,561.12 and 11,265.68

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Solution

The fourth proportional to 20,697.08, 28,561.12 and 11,265.68 is: 15,546.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.08 : 28,561.12 = 11,265.68 : x
  2. Step 2: Convert to fraction form
    20,697.08/28,561.12 = 11,265.68/x
  3. Step 3: Cross multiply
    20,697.08x = 28,561.12 × 11,265.68
  4. Step 4: Simplify right side
    20,697.08x = 321,760,438.36
  5. Step 5: Solve for x
    x = 321,760,438.36/20,697.08
  6. Step 6: Final answer
    x = 15,546.18

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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.