Home / 10,890.36-15,028.88-6,174.54

Finding the Fourth Proportional to 10,890.36, 15,028.88 and 6,174.54

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Solution

The fourth proportional to 10,890.36, 15,028.88 and 6,174.54 is: 8,520.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.36 : 15,028.88 = 6,174.54 : x
  2. Step 2: Convert to fraction form
    10,890.36/15,028.88 = 6,174.54/x
  3. Step 3: Cross multiply
    10,890.36x = 15,028.88 × 6,174.54
  4. Step 4: Simplify right side
    10,890.36x = 92,796,389.84
  5. Step 5: Solve for x
    x = 92,796,389.84/10,890.36
  6. Step 6: Final answer
    x = 8,520.97

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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.