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Finding the Fourth Proportional to 17,131.77, 25,703.19 and 7,279.47

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Solution

The fourth proportional to 17,131.77, 25,703.19 and 7,279.47 is: 10,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,131.77 : 25,703.19 = 7,279.47 : x
  2. Step 2: Convert to fraction form
    17,131.77/25,703.19 = 7,279.47/x
  3. Step 3: Cross multiply
    17,131.77x = 25,703.19 × 7,279.47
  4. Step 4: Simplify right side
    17,131.77x = 187,105,600.51
  5. Step 5: Solve for x
    x = 187,105,600.51/17,131.77
  6. Step 6: Final answer
    x = 10,921.56

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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.