Home / 15,192.87-20,919.38-12,949.71

Finding the Fourth Proportional to 15,192.87, 20,919.38 and 12,949.71

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Solution

The fourth proportional to 15,192.87, 20,919.38 and 12,949.71 is: 17,830.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,192.87 : 20,919.38 = 12,949.71 : x
  2. Step 2: Convert to fraction form
    15,192.87/20,919.38 = 12,949.71/x
  3. Step 3: Cross multiply
    15,192.87x = 20,919.38 × 12,949.71
  4. Step 4: Simplify right side
    15,192.87x = 270,899,839.63
  5. Step 5: Solve for x
    x = 270,899,839.63/15,192.87
  6. Step 6: Final answer
    x = 17,830.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.