Home / 12,110.40-18,158.30-7,896.78

Finding the Fourth Proportional to 12,110.40, 18,158.30 and 7,896.78

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Solution

The fourth proportional to 12,110.40, 18,158.30 and 7,896.78 is: 11,840.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,110.40 : 18,158.30 = 7,896.78 : x
  2. Step 2: Convert to fraction form
    12,110.40/18,158.30 = 7,896.78/x
  3. Step 3: Cross multiply
    12,110.40x = 18,158.30 × 7,896.78
  4. Step 4: Simplify right side
    12,110.40x = 143,392,100.27
  5. Step 5: Solve for x
    x = 143,392,100.27/12,110.40
  6. Step 6: Final answer
    x = 11,840.41

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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.