Home / 19,659.82-27,129.45-11,159.66

Finding the Fourth Proportional to 19,659.82, 27,129.45 and 11,159.66

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Solution

The fourth proportional to 19,659.82, 27,129.45 and 11,159.66 is: 15,399.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,659.82 : 27,129.45 = 11,159.66 : x
  2. Step 2: Convert to fraction form
    19,659.82/27,129.45 = 11,159.66/x
  3. Step 3: Cross multiply
    19,659.82x = 27,129.45 × 11,159.66
  4. Step 4: Simplify right side
    19,659.82x = 302,755,437.99
  5. Step 5: Solve for x
    x = 302,755,437.99/19,659.82
  6. Step 6: Final answer
    x = 15,399.71

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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.