Home / 12,880.32-19,324.68-5,491.05

Finding the Fourth Proportional to 12,880.32, 19,324.68 and 5,491.05

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Solution

The fourth proportional to 12,880.32, 19,324.68 and 5,491.05 is: 8,238.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.32 : 19,324.68 = 5,491.05 : x
  2. Step 2: Convert to fraction form
    12,880.32/19,324.68 = 5,491.05/x
  3. Step 3: Cross multiply
    12,880.32x = 19,324.68 × 5,491.05
  4. Step 4: Simplify right side
    12,880.32x = 106,112,784.11
  5. Step 5: Solve for x
    x = 106,112,784.11/12,880.32
  6. Step 6: Final answer
    x = 8,238.37

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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.