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Finding the Fourth Proportional to 12,903.65, 19,342.40 and 8,744.08

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Solution

The fourth proportional to 12,903.65, 19,342.40 and 8,744.08 is: 13,107.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.65 : 19,342.40 = 8,744.08 : x
  2. Step 2: Convert to fraction form
    12,903.65/19,342.40 = 8,744.08/x
  3. Step 3: Cross multiply
    12,903.65x = 19,342.40 × 8,744.08
  4. Step 4: Simplify right side
    12,903.65x = 169,131,438.12
  5. Step 5: Solve for x
    x = 169,131,438.12/12,903.65
  6. Step 6: Final answer
    x = 13,107.26

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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.