Home / 25,977.81-38,972.49-12,119.25

Finding the Fourth Proportional to 25,977.81, 38,972.49 and 12,119.25

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Solution

The fourth proportional to 25,977.81, 38,972.49 and 12,119.25 is: 18,181.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,977.81 : 38,972.49 = 12,119.25 : x
  2. Step 2: Convert to fraction form
    25,977.81/38,972.49 = 12,119.25/x
  3. Step 3: Cross multiply
    25,977.81x = 38,972.49 × 12,119.25
  4. Step 4: Simplify right side
    25,977.81x = 472,317,349.43
  5. Step 5: Solve for x
    x = 472,317,349.43/25,977.81
  6. Step 6: Final answer
    x = 18,181.57

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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.