Home / 20,346.43-28,079.76-11,394.77

Finding the Fourth Proportional to 20,346.43, 28,079.76 and 11,394.77

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Solution

The fourth proportional to 20,346.43, 28,079.76 and 11,394.77 is: 15,725.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.43 : 28,079.76 = 11,394.77 : x
  2. Step 2: Convert to fraction form
    20,346.43/28,079.76 = 11,394.77/x
  3. Step 3: Cross multiply
    20,346.43x = 28,079.76 × 11,394.77
  4. Step 4: Simplify right side
    20,346.43x = 319,962,406.86
  5. Step 5: Solve for x
    x = 319,962,406.86/20,346.43
  6. Step 6: Final answer
    x = 15,725.73

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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.