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Finding the Fourth Proportional to 13,959.17, 19,257.09 and 8,294.09

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Solution

The fourth proportional to 13,959.17, 19,257.09 and 8,294.09 is: 11,441.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.17 : 19,257.09 = 8,294.09 : x
  2. Step 2: Convert to fraction form
    13,959.17/19,257.09 = 8,294.09/x
  3. Step 3: Cross multiply
    13,959.17x = 19,257.09 × 8,294.09
  4. Step 4: Simplify right side
    13,959.17x = 159,719,941.31
  5. Step 5: Solve for x
    x = 159,719,941.31/13,959.17
  6. Step 6: Final answer
    x = 11,441.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.