Home / 16,805.88-25,212.57-5,120.01

Finding the Fourth Proportional to 16,805.88, 25,212.57 and 5,120.01

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Solution

The fourth proportional to 16,805.88, 25,212.57 and 5,120.01 is: 7,681.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,805.88 : 25,212.57 = 5,120.01 : x
  2. Step 2: Convert to fraction form
    16,805.88/25,212.57 = 5,120.01/x
  3. Step 3: Cross multiply
    16,805.88x = 25,212.57 × 5,120.01
  4. Step 4: Simplify right side
    16,805.88x = 129,088,591.33
  5. Step 5: Solve for x
    x = 129,088,591.33/16,805.88
  6. Step 6: Final answer
    x = 7,681.16

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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.