Home / 10,381.20-15,571.80-9,846.60

Finding the Fourth Proportional to 10,381.20, 15,571.80 and 9,846.60

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Solution

The fourth proportional to 10,381.20, 15,571.80 and 9,846.60 is: 14,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.20 : 15,571.80 = 9,846.60 : x
  2. Step 2: Convert to fraction form
    10,381.20/15,571.80 = 9,846.60/x
  3. Step 3: Cross multiply
    10,381.20x = 15,571.80 × 9,846.60
  4. Step 4: Simplify right side
    10,381.20x = 153,329,285.88
  5. Step 5: Solve for x
    x = 153,329,285.88/10,381.20
  6. Step 6: Final answer
    x = 14,769.90

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Similar ratio
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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.