Home / 20,282.64-27,979.56-12,834.96

Finding the Fourth Proportional to 20,282.64, 27,979.56 and 12,834.96

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Solution

The fourth proportional to 20,282.64, 27,979.56 and 12,834.96 is: 17,705.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.64 : 27,979.56 = 12,834.96 : x
  2. Step 2: Convert to fraction form
    20,282.64/27,979.56 = 12,834.96/x
  3. Step 3: Cross multiply
    20,282.64x = 27,979.56 × 12,834.96
  4. Step 4: Simplify right side
    20,282.64x = 359,116,533.42
  5. Step 5: Solve for x
    x = 359,116,533.42/20,282.64
  6. Step 6: Final answer
    x = 17,705.61

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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.