Home / 16,806.89-25,210.32-5,120.11

Finding the Fourth Proportional to 16,806.89, 25,210.32 and 5,120.11

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Solution

The fourth proportional to 16,806.89, 25,210.32 and 5,120.11 is: 7,680.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,806.89 : 25,210.32 = 5,120.11 : x
  2. Step 2: Convert to fraction form
    16,806.89/25,210.32 = 5,120.11/x
  3. Step 3: Cross multiply
    16,806.89x = 25,210.32 × 5,120.11
  4. Step 4: Simplify right side
    16,806.89x = 129,079,611.54
  5. Step 5: Solve for x
    x = 129,079,611.54/16,806.89
  6. Step 6: Final answer
    x = 7,680.16

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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.