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Finding the Fourth Proportional to 12,750.71, 19,086.67 and 12,563.89

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Solution

The fourth proportional to 12,750.71, 19,086.67 and 12,563.89 is: 18,807.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.71 : 19,086.67 = 12,563.89 : x
  2. Step 2: Convert to fraction form
    12,750.71/19,086.67 = 12,563.89/x
  3. Step 3: Cross multiply
    12,750.71x = 19,086.67 × 12,563.89
  4. Step 4: Simplify right side
    12,750.71x = 239,802,743.22
  5. Step 5: Solve for x
    x = 239,802,743.22/12,750.71
  6. Step 6: Final answer
    x = 18,807.01

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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.