Home / 14,187.56-19,579.30-8,138.84

Finding the Fourth Proportional to 14,187.56, 19,579.30 and 8,138.84

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Solution

The fourth proportional to 14,187.56, 19,579.30 and 8,138.84 is: 11,231.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.56 : 19,579.30 = 8,138.84 : x
  2. Step 2: Convert to fraction form
    14,187.56/19,579.30 = 8,138.84/x
  3. Step 3: Cross multiply
    14,187.56x = 19,579.30 × 8,138.84
  4. Step 4: Simplify right side
    14,187.56x = 159,352,790.01
  5. Step 5: Solve for x
    x = 159,352,790.01/14,187.56
  6. Step 6: Final answer
    x = 11,231.87

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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.