Home / 19,979.64-29,960.19-11,662.06

Finding the Fourth Proportional to 19,979.64, 29,960.19 and 11,662.06

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Solution

The fourth proportional to 19,979.64, 29,960.19 and 11,662.06 is: 17,487.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,979.64 : 29,960.19 = 11,662.06 : x
  2. Step 2: Convert to fraction form
    19,979.64/29,960.19 = 11,662.06/x
  3. Step 3: Cross multiply
    19,979.64x = 29,960.19 × 11,662.06
  4. Step 4: Simplify right side
    19,979.64x = 349,397,533.39
  5. Step 5: Solve for x
    x = 349,397,533.39/19,979.64
  6. Step 6: Final answer
    x = 17,487.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.