Home / 20,680.86-28,533.15-11,727.66

Finding the Fourth Proportional to 20,680.86, 28,533.15 and 11,727.66

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Solution

The fourth proportional to 20,680.86, 28,533.15 and 11,727.66 is: 16,180.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.86 : 28,533.15 = 11,727.66 : x
  2. Step 2: Convert to fraction form
    20,680.86/28,533.15 = 11,727.66/x
  3. Step 3: Cross multiply
    20,680.86x = 28,533.15 × 11,727.66
  4. Step 4: Simplify right side
    20,680.86x = 334,627,081.93
  5. Step 5: Solve for x
    x = 334,627,081.93/20,680.86
  6. Step 6: Final answer
    x = 16,180.52

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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.