Home / 11,515.60-17,189.32-9,882.64

Finding the Fourth Proportional to 11,515.60, 17,189.32 and 9,882.64

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Solution

The fourth proportional to 11,515.60, 17,189.32 and 9,882.64 is: 14,751.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.60 : 17,189.32 = 9,882.64 : x
  2. Step 2: Convert to fraction form
    11,515.60/17,189.32 = 9,882.64/x
  3. Step 3: Cross multiply
    11,515.60x = 17,189.32 × 9,882.64
  4. Step 4: Simplify right side
    11,515.60x = 169,875,861.40
  5. Step 5: Solve for x
    x = 169,875,861.40/11,515.60
  6. Step 6: Final answer
    x = 14,751.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.