Home / 21,724.39-29,980.29-12,292.75

Finding the Fourth Proportional to 21,724.39, 29,980.29 and 12,292.75

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Solution

The fourth proportional to 21,724.39, 29,980.29 and 12,292.75 is: 16,964.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.39 : 29,980.29 = 12,292.75 : x
  2. Step 2: Convert to fraction form
    21,724.39/29,980.29 = 12,292.75/x
  3. Step 3: Cross multiply
    21,724.39x = 29,980.29 × 12,292.75
  4. Step 4: Simplify right side
    21,724.39x = 368,540,209.90
  5. Step 5: Solve for x
    x = 368,540,209.90/21,724.39
  6. Step 6: Final answer
    x = 16,964.35

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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.