Home / 13,145.63-19,718.46-3,911.63

Finding the Fourth Proportional to 13,145.63, 19,718.46 and 3,911.63

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Solution

The fourth proportional to 13,145.63, 19,718.46 and 3,911.63 is: 5,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.63 : 19,718.46 = 3,911.63 : x
  2. Step 2: Convert to fraction form
    13,145.63/19,718.46 = 3,911.63/x
  3. Step 3: Cross multiply
    13,145.63x = 19,718.46 × 3,911.63
  4. Step 4: Simplify right side
    13,145.63x = 77,131,221.10
  5. Step 5: Solve for x
    x = 77,131,221.10/13,145.63
  6. Step 6: Final answer
    x = 5,867.44

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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.