Home / 20,832.12-28,743.88-12,336.91

Finding the Fourth Proportional to 20,832.12, 28,743.88 and 12,336.91

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Solution

The fourth proportional to 20,832.12, 28,743.88 and 12,336.91 is: 17,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.12 : 28,743.88 = 12,336.91 : x
  2. Step 2: Convert to fraction form
    20,832.12/28,743.88 = 12,336.91/x
  3. Step 3: Cross multiply
    20,832.12x = 28,743.88 × 12,336.91
  4. Step 4: Simplify right side
    20,832.12x = 354,610,660.61
  5. Step 5: Solve for x
    x = 354,610,660.61/20,832.12
  6. Step 6: Final answer
    x = 17,022.30

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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.