Home / 30,153.45-45,198.26-10,143.90

Finding the Fourth Proportional to 30,153.45, 45,198.26 and 10,143.90

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Solution

The fourth proportional to 30,153.45, 45,198.26 and 10,143.90 is: 15,205.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,153.45 : 45,198.26 = 10,143.90 : x
  2. Step 2: Convert to fraction form
    30,153.45/45,198.26 = 10,143.90/x
  3. Step 3: Cross multiply
    30,153.45x = 45,198.26 × 10,143.90
  4. Step 4: Simplify right side
    30,153.45x = 458,486,616.93
  5. Step 5: Solve for x
    x = 458,486,616.93/30,153.45
  6. Step 6: Final answer
    x = 15,205.11

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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.