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Finding the Fourth Proportional to 12,687.64, 19,020.52 and 6,104.77

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Solution

The fourth proportional to 12,687.64, 19,020.52 and 6,104.77 is: 9,151.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.64 : 19,020.52 = 6,104.77 : x
  2. Step 2: Convert to fraction form
    12,687.64/19,020.52 = 6,104.77/x
  3. Step 3: Cross multiply
    12,687.64x = 19,020.52 × 6,104.77
  4. Step 4: Simplify right side
    12,687.64x = 116,115,859.96
  5. Step 5: Solve for x
    x = 116,115,859.96/12,687.64
  6. Step 6: Final answer
    x = 9,151.89

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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.