Home / 14,128.72-19,501.17-8,163.85

Finding the Fourth Proportional to 14,128.72, 19,501.17 and 8,163.85

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Solution

The fourth proportional to 14,128.72, 19,501.17 and 8,163.85 is: 11,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.72 : 19,501.17 = 8,163.85 : x
  2. Step 2: Convert to fraction form
    14,128.72/19,501.17 = 8,163.85/x
  3. Step 3: Cross multiply
    14,128.72x = 19,501.17 × 8,163.85
  4. Step 4: Simplify right side
    14,128.72x = 159,204,626.70
  5. Step 5: Solve for x
    x = 159,204,626.70/14,128.72
  6. Step 6: Final answer
    x = 11,268.16

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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.