Home / 13,181.80-19,755.42-5,381.68

Finding the Fourth Proportional to 13,181.80, 19,755.42 and 5,381.68

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Solution

The fourth proportional to 13,181.80, 19,755.42 and 5,381.68 is: 8,065.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.80 : 19,755.42 = 5,381.68 : x
  2. Step 2: Convert to fraction form
    13,181.80/19,755.42 = 5,381.68/x
  3. Step 3: Cross multiply
    13,181.80x = 19,755.42 × 5,381.68
  4. Step 4: Simplify right side
    13,181.80x = 106,317,348.71
  5. Step 5: Solve for x
    x = 106,317,348.71/13,181.80
  6. Step 6: Final answer
    x = 8,065.47

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1.5x scale

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.