Home / 20,917.35-28,841.60-14,207.31

Finding the Fourth Proportional to 20,917.35, 28,841.60 and 14,207.31

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Solution

The fourth proportional to 20,917.35, 28,841.60 and 14,207.31 is: 19,589.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.35 : 28,841.60 = 14,207.31 : x
  2. Step 2: Convert to fraction form
    20,917.35/28,841.60 = 14,207.31/x
  3. Step 3: Cross multiply
    20,917.35x = 28,841.60 × 14,207.31
  4. Step 4: Simplify right side
    20,917.35x = 409,761,481.06
  5. Step 5: Solve for x
    x = 409,761,481.06/20,917.35
  6. Step 6: Final answer
    x = 19,589.55

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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.