Home / 13,770.91-20,656.34-3,910.29

Finding the Fourth Proportional to 13,770.91, 20,656.34 and 3,910.29

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Solution

The fourth proportional to 13,770.91, 20,656.34 and 3,910.29 is: 5,865.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.91 : 20,656.34 = 3,910.29 : x
  2. Step 2: Convert to fraction form
    13,770.91/20,656.34 = 3,910.29/x
  3. Step 3: Cross multiply
    13,770.91x = 20,656.34 × 3,910.29
  4. Step 4: Simplify right side
    13,770.91x = 80,772,279.74
  5. Step 5: Solve for x
    x = 80,772,279.74/13,770.91
  6. Step 6: Final answer
    x = 5,865.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.