Home / 20,722.10-28,597.20-11,769.30

Finding the Fourth Proportional to 20,722.10, 28,597.20 and 11,769.30

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Solution

The fourth proportional to 20,722.10, 28,597.20 and 11,769.30 is: 16,242.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.10 : 28,597.20 = 11,769.30 : x
  2. Step 2: Convert to fraction form
    20,722.10/28,597.20 = 11,769.30/x
  3. Step 3: Cross multiply
    20,722.10x = 28,597.20 × 11,769.30
  4. Step 4: Simplify right side
    20,722.10x = 336,569,025.96
  5. Step 5: Solve for x
    x = 336,569,025.96/20,722.10
  6. Step 6: Final answer
    x = 16,242.03

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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.