Home / 19,691.64-27,180.54-11,313.72

Finding the Fourth Proportional to 19,691.64, 27,180.54 and 11,313.72

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Solution

The fourth proportional to 19,691.64, 27,180.54 and 11,313.72 is: 15,616.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,691.64 : 27,180.54 = 11,313.72 : x
  2. Step 2: Convert to fraction form
    19,691.64/27,180.54 = 11,313.72/x
  3. Step 3: Cross multiply
    19,691.64x = 27,180.54 × 11,313.72
  4. Step 4: Simplify right side
    19,691.64x = 307,513,019.01
  5. Step 5: Solve for x
    x = 307,513,019.01/19,691.64
  6. Step 6: Final answer
    x = 15,616.42

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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.