Home / 27,979-41,979.30-13,187.32

Finding the Fourth Proportional to 27,979, 41,979.30 and 13,187.32

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Solution

The fourth proportional to 27,979, 41,979.30 and 13,187.32 is: 19,786.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979 : 41,979.30 = 13,187.32 : x
  2. Step 2: Convert to fraction form
    27,979/41,979.30 = 13,187.32/x
  3. Step 3: Cross multiply
    27,979x = 41,979.30 × 13,187.32
  4. Step 4: Simplify right side
    27,979x = 553,594,462.48
  5. Step 5: Solve for x
    x = 553,594,462.48/27,979
  6. Step 6: Final answer
    x = 19,786.07

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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.