Home / 13,562.40-20,311.20-8,313.60

Finding the Fourth Proportional to 13,562.40, 20,311.20 and 8,313.60

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Solution

The fourth proportional to 13,562.40, 20,311.20 and 8,313.60 is: 12,450.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,562.40 : 20,311.20 = 8,313.60 : x
  2. Step 2: Convert to fraction form
    13,562.40/20,311.20 = 8,313.60/x
  3. Step 3: Cross multiply
    13,562.40x = 20,311.20 × 8,313.60
  4. Step 4: Simplify right side
    13,562.40x = 168,859,192.32
  5. Step 5: Solve for x
    x = 168,859,192.32/13,562.40
  6. Step 6: Final answer
    x = 12,450.54

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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.