Home / 17,143.56-25,715.16-5,457.78

Finding the Fourth Proportional to 17,143.56, 25,715.16 and 5,457.78

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Solution

The fourth proportional to 17,143.56, 25,715.16 and 5,457.78 is: 8,186.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,143.56 : 25,715.16 = 5,457.78 : x
  2. Step 2: Convert to fraction form
    17,143.56/25,715.16 = 5,457.78/x
  3. Step 3: Cross multiply
    17,143.56x = 25,715.16 × 5,457.78
  4. Step 4: Simplify right side
    17,143.56x = 140,347,685.94
  5. Step 5: Solve for x
    x = 140,347,685.94/17,143.56
  6. Step 6: Final answer
    x = 8,186.61

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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.