Home / 12,911.87-19,372.97-5,895.20

Finding the Fourth Proportional to 12,911.87, 19,372.97 and 5,895.20

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Solution

The fourth proportional to 12,911.87, 19,372.97 and 5,895.20 is: 8,845.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.87 : 19,372.97 = 5,895.20 : x
  2. Step 2: Convert to fraction form
    12,911.87/19,372.97 = 5,895.20/x
  3. Step 3: Cross multiply
    12,911.87x = 19,372.97 × 5,895.20
  4. Step 4: Simplify right side
    12,911.87x = 114,207,486.94
  5. Step 5: Solve for x
    x = 114,207,486.94/12,911.87
  6. Step 6: Final answer
    x = 8,845.15

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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.