Home / 19,665.16-27,138.56-11,167.64

Finding the Fourth Proportional to 19,665.16, 27,138.56 and 11,167.64

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Solution

The fourth proportional to 19,665.16, 27,138.56 and 11,167.64 is: 15,411.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,665.16 : 27,138.56 = 11,167.64 : x
  2. Step 2: Convert to fraction form
    19,665.16/27,138.56 = 11,167.64/x
  3. Step 3: Cross multiply
    19,665.16x = 27,138.56 × 11,167.64
  4. Step 4: Simplify right side
    19,665.16x = 303,073,668.20
  5. Step 5: Solve for x
    x = 303,073,668.20/19,665.16
  6. Step 6: Final answer
    x = 15,411.71

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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.