Home / 17,121.72-25,685.14-5,435.32

Finding the Fourth Proportional to 17,121.72, 25,685.14 and 5,435.32

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Solution

The fourth proportional to 17,121.72, 25,685.14 and 5,435.32 is: 8,153.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,121.72 : 25,685.14 = 5,435.32 : x
  2. Step 2: Convert to fraction form
    17,121.72/25,685.14 = 5,435.32/x
  3. Step 3: Cross multiply
    17,121.72x = 25,685.14 × 5,435.32
  4. Step 4: Simplify right side
    17,121.72x = 139,606,955.14
  5. Step 5: Solve for x
    x = 139,606,955.14/17,121.72
  6. Step 6: Final answer
    x = 8,153.79

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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.