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Finding the Fourth Proportional to 14,984.82, 20,659.80 and 12,286.11

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Solution

The fourth proportional to 14,984.82, 20,659.80 and 12,286.11 is: 16,939.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,984.82 : 20,659.80 = 12,286.11 : x
  2. Step 2: Convert to fraction form
    14,984.82/20,659.80 = 12,286.11/x
  3. Step 3: Cross multiply
    14,984.82x = 20,659.80 × 12,286.11
  4. Step 4: Simplify right side
    14,984.82x = 253,828,575.38
  5. Step 5: Solve for x
    x = 253,828,575.38/14,984.82
  6. Step 6: Final answer
    x = 16,939.05

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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.