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Finding the Fourth Proportional to 14,836.19, 20,473.98 and 8,121.87

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Solution

The fourth proportional to 14,836.19, 20,473.98 and 8,121.87 is: 11,208.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,836.19 : 20,473.98 = 8,121.87 : x
  2. Step 2: Convert to fraction form
    14,836.19/20,473.98 = 8,121.87/x
  3. Step 3: Cross multiply
    14,836.19x = 20,473.98 × 8,121.87
  4. Step 4: Simplify right side
    14,836.19x = 166,286,901.57
  5. Step 5: Solve for x
    x = 166,286,901.57/14,836.19
  6. Step 6: Final answer
    x = 11,208.19

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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.