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Finding the Fourth Proportional to 21,797.99, 30,081.80 and 12,367.97

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Solution

The fourth proportional to 21,797.99, 30,081.80 and 12,367.97 is: 17,068.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,797.99 : 30,081.80 = 12,367.97 : x
  2. Step 2: Convert to fraction form
    21,797.99/30,081.80 = 12,367.97/x
  3. Step 3: Cross multiply
    21,797.99x = 30,081.80 × 12,367.97
  4. Step 4: Simplify right side
    21,797.99x = 372,050,680.46
  5. Step 5: Solve for x
    x = 372,050,680.46/21,797.99
  6. Step 6: Final answer
    x = 17,068.12

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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.