Home / 20,801.27-28,705.75-11,853.96

Finding the Fourth Proportional to 20,801.27, 28,705.75 and 11,853.96

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Solution

The fourth proportional to 20,801.27, 28,705.75 and 11,853.96 is: 16,358.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.27 : 28,705.75 = 11,853.96 : x
  2. Step 2: Convert to fraction form
    20,801.27/28,705.75 = 11,853.96/x
  3. Step 3: Cross multiply
    20,801.27x = 28,705.75 × 11,853.96
  4. Step 4: Simplify right side
    20,801.27x = 340,276,836.46
  5. Step 5: Solve for x
    x = 340,276,836.46/20,801.27
  6. Step 6: Final answer
    x = 16,358.47

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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.