Home / 13,141.12-19,662.26-7,856.68

Finding the Fourth Proportional to 13,141.12, 19,662.26 and 7,856.68

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Solution

The fourth proportional to 13,141.12, 19,662.26 and 7,856.68 is: 11,755.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.12 : 19,662.26 = 7,856.68 : x
  2. Step 2: Convert to fraction form
    13,141.12/19,662.26 = 7,856.68/x
  3. Step 3: Cross multiply
    13,141.12x = 19,662.26 × 7,856.68
  4. Step 4: Simplify right side
    13,141.12x = 154,479,986.59
  5. Step 5: Solve for x
    x = 154,479,986.59/13,141.12
  6. Step 6: Final answer
    x = 11,755.47

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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.