Home / 20,734.39-28,613.52-11,784.86

Finding the Fourth Proportional to 20,734.39, 28,613.52 and 11,784.86

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Solution

The fourth proportional to 20,734.39, 28,613.52 and 11,784.86 is: 16,263.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.39 : 28,613.52 = 11,784.86 : x
  2. Step 2: Convert to fraction form
    20,734.39/28,613.52 = 11,784.86/x
  3. Step 3: Cross multiply
    20,734.39x = 28,613.52 × 11,784.86
  4. Step 4: Simplify right side
    20,734.39x = 337,206,327.31
  5. Step 5: Solve for x
    x = 337,206,327.31/20,734.39
  6. Step 6: Final answer
    x = 16,263.14

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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.