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Finding the Fourth Proportional to 14,249.69, 19,664.87 and 8,281.88

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Solution

The fourth proportional to 14,249.69, 19,664.87 and 8,281.88 is: 11,429.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,249.69 : 19,664.87 = 8,281.88 : x
  2. Step 2: Convert to fraction form
    14,249.69/19,664.87 = 8,281.88/x
  3. Step 3: Cross multiply
    14,249.69x = 19,664.87 × 8,281.88
  4. Step 4: Simplify right side
    14,249.69x = 162,861,953.82
  5. Step 5: Solve for x
    x = 162,861,953.82/14,249.69
  6. Step 6: Final answer
    x = 11,429.16

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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.