Home / 19,919.87-29,865.15-12,025.20

Finding the Fourth Proportional to 19,919.87, 29,865.15 and 12,025.20

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Solution

The fourth proportional to 19,919.87, 29,865.15 and 12,025.20 is: 18,028.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.87 : 29,865.15 = 12,025.20 : x
  2. Step 2: Convert to fraction form
    19,919.87/29,865.15 = 12,025.20/x
  3. Step 3: Cross multiply
    19,919.87x = 29,865.15 × 12,025.20
  4. Step 4: Simplify right side
    19,919.87x = 359,134,401.78
  5. Step 5: Solve for x
    x = 359,134,401.78/19,919.87
  6. Step 6: Final answer
    x = 18,028.96

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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.