Home / 13,313.20-18,378.12-8,599.80

Finding the Fourth Proportional to 13,313.20, 18,378.12 and 8,599.80

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Solution

The fourth proportional to 13,313.20, 18,378.12 and 8,599.80 is: 11,871.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.20 : 18,378.12 = 8,599.80 : x
  2. Step 2: Convert to fraction form
    13,313.20/18,378.12 = 8,599.80/x
  3. Step 3: Cross multiply
    13,313.20x = 18,378.12 × 8,599.80
  4. Step 4: Simplify right side
    13,313.20x = 158,048,156.38
  5. Step 5: Solve for x
    x = 158,048,156.38/13,313.20
  6. Step 6: Final answer
    x = 11,871.54

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Similar ratio
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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.