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Finding the Fourth Proportional to 11,160.40, 16,740.60 and 6,475.60

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Solution

The fourth proportional to 11,160.40, 16,740.60 and 6,475.60 is: 9,713.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,160.40 : 16,740.60 = 6,475.60 : x
  2. Step 2: Convert to fraction form
    11,160.40/16,740.60 = 6,475.60/x
  3. Step 3: Cross multiply
    11,160.40x = 16,740.60 × 6,475.60
  4. Step 4: Simplify right side
    11,160.40x = 108,405,429.36
  5. Step 5: Solve for x
    x = 108,405,429.36/11,160.40
  6. Step 6: Final answer
    x = 9,713.40

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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.