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Finding the Fourth Proportional to 10,803.70, 16,205.55 and 9,965.35

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Solution

The fourth proportional to 10,803.70, 16,205.55 and 9,965.35 is: 14,948.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,803.70 : 16,205.55 = 9,965.35 : x
  2. Step 2: Convert to fraction form
    10,803.70/16,205.55 = 9,965.35/x
  3. Step 3: Cross multiply
    10,803.70x = 16,205.55 × 9,965.35
  4. Step 4: Simplify right side
    10,803.70x = 161,493,977.69
  5. Step 5: Solve for x
    x = 161,493,977.69/10,803.70
  6. Step 6: Final answer
    x = 14,948.03

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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.