Home / 12,919.08-19,378.66-4,160.15

Finding the Fourth Proportional to 12,919.08, 19,378.66 and 4,160.15

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Solution

The fourth proportional to 12,919.08, 19,378.66 and 4,160.15 is: 6,240.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.08 : 19,378.66 = 4,160.15 : x
  2. Step 2: Convert to fraction form
    12,919.08/19,378.66 = 4,160.15/x
  3. Step 3: Cross multiply
    12,919.08x = 19,378.66 × 4,160.15
  4. Step 4: Simplify right side
    12,919.08x = 80,618,132.40
  5. Step 5: Solve for x
    x = 80,618,132.40/12,919.08
  6. Step 6: Final answer
    x = 6,240.24

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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.