Home / 17,117.80-25,680.78-5,431.02

Finding the Fourth Proportional to 17,117.80, 25,680.78 and 5,431.02

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Solution

The fourth proportional to 17,117.80, 25,680.78 and 5,431.02 is: 8,147.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,117.80 : 25,680.78 = 5,431.02 : x
  2. Step 2: Convert to fraction form
    17,117.80/25,680.78 = 5,431.02/x
  3. Step 3: Cross multiply
    17,117.80x = 25,680.78 × 5,431.02
  4. Step 4: Simplify right side
    17,117.80x = 139,472,733.49
  5. Step 5: Solve for x
    x = 139,472,733.49/17,117.80
  6. Step 6: Final answer
    x = 8,147.82

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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.