Home / 10,129.40-15,194.09-5,196.28

Finding the Fourth Proportional to 10,129.40, 15,194.09 and 5,196.28

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Solution

The fourth proportional to 10,129.40, 15,194.09 and 5,196.28 is: 7,794.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.40 : 15,194.09 = 5,196.28 : x
  2. Step 2: Convert to fraction form
    10,129.40/15,194.09 = 5,196.28/x
  3. Step 3: Cross multiply
    10,129.40x = 15,194.09 × 5,196.28
  4. Step 4: Simplify right side
    10,129.40x = 78,952,745.99
  5. Step 5: Solve for x
    x = 78,952,745.99/10,129.40
  6. Step 6: Final answer
    x = 7,794.41

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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.