Home / 21,724.14-29,979.95-12,292.50

Finding the Fourth Proportional to 21,724.14, 29,979.95 and 12,292.50

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Solution

The fourth proportional to 21,724.14, 29,979.95 and 12,292.50 is: 16,964.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.14 : 29,979.95 = 12,292.50 : x
  2. Step 2: Convert to fraction form
    21,724.14/29,979.95 = 12,292.50/x
  3. Step 3: Cross multiply
    21,724.14x = 29,979.95 × 12,292.50
  4. Step 4: Simplify right side
    21,724.14x = 368,528,473.91
  5. Step 5: Solve for x
    x = 368,528,473.91/21,724.14
  6. Step 6: Final answer
    x = 16,964.01

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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.