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Finding the Fourth Proportional to 12,817.64, 19,253.79 and 12,068.59

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Solution

The fourth proportional to 12,817.64, 19,253.79 and 12,068.59 is: 18,128.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,817.64 : 19,253.79 = 12,068.59 : x
  2. Step 2: Convert to fraction form
    12,817.64/19,253.79 = 12,068.59/x
  3. Step 3: Cross multiply
    12,817.64x = 19,253.79 × 12,068.59
  4. Step 4: Simplify right side
    12,817.64x = 232,366,049.32
  5. Step 5: Solve for x
    x = 232,366,049.32/12,817.64
  6. Step 6: Final answer
    x = 18,128.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.