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Finding the Fourth Proportional to 17,279.68, 23,840 and 9,724.48

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Solution

The fourth proportional to 17,279.68, 23,840 and 9,724.48 is: 13,416.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,279.68 : 23,840 = 9,724.48 : x
  2. Step 2: Convert to fraction form
    17,279.68/23,840 = 9,724.48/x
  3. Step 3: Cross multiply
    17,279.68x = 23,840 × 9,724.48
  4. Step 4: Simplify right side
    17,279.68x = 231,831,603.20
  5. Step 5: Solve for x
    x = 231,831,603.20/17,279.68
  6. Step 6: Final answer
    x = 13,416.43

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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.