Home / 19,742.26-27,241.68-12,678.24

Finding the Fourth Proportional to 19,742.26, 27,241.68 and 12,678.24

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Solution

The fourth proportional to 19,742.26, 27,241.68 and 12,678.24 is: 17,494.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,742.26 : 27,241.68 = 12,678.24 : x
  2. Step 2: Convert to fraction form
    19,742.26/27,241.68 = 12,678.24/x
  3. Step 3: Cross multiply
    19,742.26x = 27,241.68 × 12,678.24
  4. Step 4: Simplify right side
    19,742.26x = 345,376,557.04
  5. Step 5: Solve for x
    x = 345,376,557.04/19,742.26
  6. Step 6: Final answer
    x = 17,494.28

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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.