Home / 20,633.43-28,473.86-11,680.71

Finding the Fourth Proportional to 20,633.43, 28,473.86 and 11,680.71

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Solution

The fourth proportional to 20,633.43, 28,473.86 and 11,680.71 is: 16,119.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.43 : 28,473.86 = 11,680.71 : x
  2. Step 2: Convert to fraction form
    20,633.43/28,473.86 = 11,680.71/x
  3. Step 3: Cross multiply
    20,633.43x = 28,473.86 × 11,680.71
  4. Step 4: Simplify right side
    20,633.43x = 332,594,823.67
  5. Step 5: Solve for x
    x = 332,594,823.67/20,633.43
  6. Step 6: Final answer
    x = 16,119.22

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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.