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Finding the Fourth Proportional to 17,514.40, 26,228.40 and 11,639.20

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Solution

The fourth proportional to 17,514.40, 26,228.40 and 11,639.20 is: 17,430.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,514.40 : 26,228.40 = 11,639.20 : x
  2. Step 2: Convert to fraction form
    17,514.40/26,228.40 = 11,639.20/x
  3. Step 3: Cross multiply
    17,514.40x = 26,228.40 × 11,639.20
  4. Step 4: Simplify right side
    17,514.40x = 305,277,593.28
  5. Step 5: Solve for x
    x = 305,277,593.28/17,514.40
  6. Step 6: Final answer
    x = 17,430.09

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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.