Home / 10,121.32-15,185.22-4,578.76

Finding the Fourth Proportional to 10,121.32, 15,185.22 and 4,578.76

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Solution

The fourth proportional to 10,121.32, 15,185.22 and 4,578.76 is: 6,869.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.32 : 15,185.22 = 4,578.76 : x
  2. Step 2: Convert to fraction form
    10,121.32/15,185.22 = 4,578.76/x
  3. Step 3: Cross multiply
    10,121.32x = 15,185.22 × 4,578.76
  4. Step 4: Simplify right side
    10,121.32x = 69,529,477.93
  5. Step 5: Solve for x
    x = 69,529,477.93/10,121.32
  6. Step 6: Final answer
    x = 6,869.61

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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.