Home / 20,722.87-28,596.66-11,770.34

Finding the Fourth Proportional to 20,722.87, 28,596.66 and 11,770.34

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Solution

The fourth proportional to 20,722.87, 28,596.66 and 11,770.34 is: 16,242.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.87 : 28,596.66 = 11,770.34 : x
  2. Step 2: Convert to fraction form
    20,722.87/28,596.66 = 11,770.34/x
  3. Step 3: Cross multiply
    20,722.87x = 28,596.66 × 11,770.34
  4. Step 4: Simplify right side
    20,722.87x = 336,592,411.06
  5. Step 5: Solve for x
    x = 336,592,411.06/20,722.87
  6. Step 6: Final answer
    x = 16,242.56

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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.