Home / 20,047.10-27,663.10-11,979.14

Finding the Fourth Proportional to 20,047.10, 27,663.10 and 11,979.14

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Solution

The fourth proportional to 20,047.10, 27,663.10 and 11,979.14 is: 16,530.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,047.10 : 27,663.10 = 11,979.14 : x
  2. Step 2: Convert to fraction form
    20,047.10/27,663.10 = 11,979.14/x
  3. Step 3: Cross multiply
    20,047.10x = 27,663.10 × 11,979.14
  4. Step 4: Simplify right side
    20,047.10x = 331,379,979.47
  5. Step 5: Solve for x
    x = 331,379,979.47/20,047.10
  6. Step 6: Final answer
    x = 16,530.07

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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.