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Finding the Fourth Proportional to 11,261.60, 16,868.10 and 9,803.60

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Solution

The fourth proportional to 11,261.60, 16,868.10 and 9,803.60 is: 14,684.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,261.60 : 16,868.10 = 9,803.60 : x
  2. Step 2: Convert to fraction form
    11,261.60/16,868.10 = 9,803.60/x
  3. Step 3: Cross multiply
    11,261.60x = 16,868.10 × 9,803.60
  4. Step 4: Simplify right side
    11,261.60x = 165,368,105.16
  5. Step 5: Solve for x
    x = 165,368,105.16/11,261.60
  6. Step 6: Final answer
    x = 14,684.25

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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.