Home / 21,724.14-29,975.34-12,164.18

Finding the Fourth Proportional to 21,724.14, 29,975.34 and 12,164.18

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Solution

The fourth proportional to 21,724.14, 29,975.34 and 12,164.18 is: 16,784.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.14 : 29,975.34 = 12,164.18 : x
  2. Step 2: Convert to fraction form
    21,724.14/29,975.34 = 12,164.18/x
  3. Step 3: Cross multiply
    21,724.14x = 29,975.34 × 12,164.18
  4. Step 4: Simplify right side
    21,724.14x = 364,625,292.85
  5. Step 5: Solve for x
    x = 364,625,292.85/21,724.14
  6. Step 6: Final answer
    x = 16,784.34

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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.