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Finding the Fourth Proportional to 19,796.39, 27,311.50 and 12,240.30

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Solution

The fourth proportional to 19,796.39, 27,311.50 and 12,240.30 is: 16,886.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,796.39 : 27,311.50 = 12,240.30 : x
  2. Step 2: Convert to fraction form
    19,796.39/27,311.50 = 12,240.30/x
  3. Step 3: Cross multiply
    19,796.39x = 27,311.50 × 12,240.30
  4. Step 4: Simplify right side
    19,796.39x = 334,300,953.45
  5. Step 5: Solve for x
    x = 334,300,953.45/19,796.39
  6. Step 6: Final answer
    x = 16,886.97

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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.