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Finding the Fourth Proportional to 14,149.92, 21,224.80 and 3,619.93

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Solution

The fourth proportional to 14,149.92, 21,224.80 and 3,619.93 is: 5,429.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,149.92 : 21,224.80 = 3,619.93 : x
  2. Step 2: Convert to fraction form
    14,149.92/21,224.80 = 3,619.93/x
  3. Step 3: Cross multiply
    14,149.92x = 21,224.80 × 3,619.93
  4. Step 4: Simplify right side
    14,149.92x = 76,832,184.14
  5. Step 5: Solve for x
    x = 76,832,184.14/14,149.92
  6. Step 6: Final answer
    x = 5,429.87

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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.