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Finding the Fourth Proportional to 14,180, 19,568.42 and 7,892.80

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Solution

The fourth proportional to 14,180, 19,568.42 and 7,892.80 is: 10,892.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,180 : 19,568.42 = 7,892.80 : x
  2. Step 2: Convert to fraction form
    14,180/19,568.42 = 7,892.80/x
  3. Step 3: Cross multiply
    14,180x = 19,568.42 × 7,892.80
  4. Step 4: Simplify right side
    14,180x = 154,449,625.38
  5. Step 5: Solve for x
    x = 154,449,625.38/14,180
  6. Step 6: Final answer
    x = 10,892.08

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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.