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Finding the Fourth Proportional to 19,806.62, 27,333.12 and 11,423.12

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Solution

The fourth proportional to 19,806.62, 27,333.12 and 11,423.12 is: 15,763.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,806.62 : 27,333.12 = 11,423.12 : x
  2. Step 2: Convert to fraction form
    19,806.62/27,333.12 = 11,423.12/x
  3. Step 3: Cross multiply
    19,806.62x = 27,333.12 × 11,423.12
  4. Step 4: Simplify right side
    19,806.62x = 312,229,415.91
  5. Step 5: Solve for x
    x = 312,229,415.91/19,806.62
  6. Step 6: Final answer
    x = 15,763.90

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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.