Home / 13,892.49-19,169.58-8,438.73

Finding the Fourth Proportional to 13,892.49, 19,169.58 and 8,438.73

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Solution

The fourth proportional to 13,892.49, 19,169.58 and 8,438.73 is: 11,644.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892.49 : 19,169.58 = 8,438.73 : x
  2. Step 2: Convert to fraction form
    13,892.49/19,169.58 = 8,438.73/x
  3. Step 3: Cross multiply
    13,892.49x = 19,169.58 × 8,438.73
  4. Step 4: Simplify right side
    13,892.49x = 161,766,909.83
  5. Step 5: Solve for x
    x = 161,766,909.83/13,892.49
  6. Step 6: Final answer
    x = 11,644.20

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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.