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Finding the Fourth Proportional to 14,299.95, 19,734.98 and 8,636.09

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Solution

The fourth proportional to 14,299.95, 19,734.98 and 8,636.09 is: 11,918.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,299.95 : 19,734.98 = 8,636.09 : x
  2. Step 2: Convert to fraction form
    14,299.95/19,734.98 = 8,636.09/x
  3. Step 3: Cross multiply
    14,299.95x = 19,734.98 × 8,636.09
  4. Step 4: Simplify right side
    14,299.95x = 170,432,921.57
  5. Step 5: Solve for x
    x = 170,432,921.57/14,299.95
  6. Step 6: Final answer
    x = 11,918.42

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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.