Home / 20,659.68-28,523.40-13,597.92

Finding the Fourth Proportional to 20,659.68, 28,523.40 and 13,597.92

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Solution

The fourth proportional to 20,659.68, 28,523.40 and 13,597.92 is: 18,773.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.68 : 28,523.40 = 13,597.92 : x
  2. Step 2: Convert to fraction form
    20,659.68/28,523.40 = 13,597.92/x
  3. Step 3: Cross multiply
    20,659.68x = 28,523.40 × 13,597.92
  4. Step 4: Simplify right side
    20,659.68x = 387,858,911.33
  5. Step 5: Solve for x
    x = 387,858,911.33/20,659.68
  6. Step 6: Final answer
    x = 18,773.71

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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.