Home / 13,722.28-20,580.33-8,177.20

Finding the Fourth Proportional to 13,722.28, 20,580.33 and 8,177.20

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Solution

The fourth proportional to 13,722.28, 20,580.33 and 8,177.20 is: 12,263.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.28 : 20,580.33 = 8,177.20 : x
  2. Step 2: Convert to fraction form
    13,722.28/20,580.33 = 8,177.20/x
  3. Step 3: Cross multiply
    13,722.28x = 20,580.33 × 8,177.20
  4. Step 4: Simplify right side
    13,722.28x = 168,289,474.48
  5. Step 5: Solve for x
    x = 168,289,474.48/13,722.28
  6. Step 6: Final answer
    x = 12,263.96

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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.