Home / 13,066.88-18,022.76-8,288.28

Finding the Fourth Proportional to 13,066.88, 18,022.76 and 8,288.28

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Solution

The fourth proportional to 13,066.88, 18,022.76 and 8,288.28 is: 11,431.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,066.88 : 18,022.76 = 8,288.28 : x
  2. Step 2: Convert to fraction form
    13,066.88/18,022.76 = 8,288.28/x
  3. Step 3: Cross multiply
    13,066.88x = 18,022.76 × 8,288.28
  4. Step 4: Simplify right side
    13,066.88x = 149,377,681.25
  5. Step 5: Solve for x
    x = 149,377,681.25/13,066.88
  6. Step 6: Final answer
    x = 11,431.78

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Half scale
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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.