Home / 20,195.32-27,865.26-12,739

Finding the Fourth Proportional to 20,195.32, 27,865.26 and 12,739

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Solution

The fourth proportional to 20,195.32, 27,865.26 and 12,739 is: 17,577.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.32 : 27,865.26 = 12,739 : x
  2. Step 2: Convert to fraction form
    20,195.32/27,865.26 = 12,739/x
  3. Step 3: Cross multiply
    20,195.32x = 27,865.26 × 12,739
  4. Step 4: Simplify right side
    20,195.32x = 354,975,547.14
  5. Step 5: Solve for x
    x = 354,975,547.14/20,195.32
  6. Step 6: Final answer
    x = 17,577.12

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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.