Home / 16,639.45-24,965.11-7,147.78

Finding the Fourth Proportional to 16,639.45, 24,965.11 and 7,147.78

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Solution

The fourth proportional to 16,639.45, 24,965.11 and 7,147.78 is: 10,724.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,639.45 : 24,965.11 = 7,147.78 : x
  2. Step 2: Convert to fraction form
    16,639.45/24,965.11 = 7,147.78/x
  3. Step 3: Cross multiply
    16,639.45x = 24,965.11 × 7,147.78
  4. Step 4: Simplify right side
    16,639.45x = 178,444,989.13
  5. Step 5: Solve for x
    x = 178,444,989.13/16,639.45
  6. Step 6: Final answer
    x = 10,724.22

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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.