Home / 12,571.92-17,349.30-7,858.89

Finding the Fourth Proportional to 12,571.92, 17,349.30 and 7,858.89

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Solution

The fourth proportional to 12,571.92, 17,349.30 and 7,858.89 is: 10,845.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.92 : 17,349.30 = 7,858.89 : x
  2. Step 2: Convert to fraction form
    12,571.92/17,349.30 = 7,858.89/x
  3. Step 3: Cross multiply
    12,571.92x = 17,349.30 × 7,858.89
  4. Step 4: Simplify right side
    12,571.92x = 136,346,240.28
  5. Step 5: Solve for x
    x = 136,346,240.28/12,571.92
  6. Step 6: Final answer
    x = 10,845.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.