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Finding the Fourth Proportional to 12,700.88, 19,051.42 and 3,935.74

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Solution

The fourth proportional to 12,700.88, 19,051.42 and 3,935.74 is: 5,903.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.88 : 19,051.42 = 3,935.74 : x
  2. Step 2: Convert to fraction form
    12,700.88/19,051.42 = 3,935.74/x
  3. Step 3: Cross multiply
    12,700.88x = 19,051.42 × 3,935.74
  4. Step 4: Simplify right side
    12,700.88x = 74,981,435.75
  5. Step 5: Solve for x
    x = 74,981,435.75/12,700.88
  6. Step 6: Final answer
    x = 5,903.64

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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.