Home / 11,286.72-15,567.12-9,887.04

Finding the Fourth Proportional to 11,286.72, 15,567.12 and 9,887.04

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Solution

The fourth proportional to 11,286.72, 15,567.12 and 9,887.04 is: 13,636.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,286.72 : 15,567.12 = 9,887.04 : x
  2. Step 2: Convert to fraction form
    11,286.72/15,567.12 = 9,887.04/x
  3. Step 3: Cross multiply
    11,286.72x = 15,567.12 × 9,887.04
  4. Step 4: Simplify right side
    11,286.72x = 153,912,738.12
  5. Step 5: Solve for x
    x = 153,912,738.12/11,286.72
  6. Step 6: Final answer
    x = 13,636.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.