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Finding the Fourth Proportional to 21,467.92, 29,624.52 and 12,516.88

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Solution

The fourth proportional to 21,467.92, 29,624.52 and 12,516.88 is: 17,272.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,467.92 : 29,624.52 = 12,516.88 : x
  2. Step 2: Convert to fraction form
    21,467.92/29,624.52 = 12,516.88/x
  3. Step 3: Cross multiply
    21,467.92x = 29,624.52 × 12,516.88
  4. Step 4: Simplify right side
    21,467.92x = 370,806,561.90
  5. Step 5: Solve for x
    x = 370,806,561.90/21,467.92
  6. Step 6: Final answer
    x = 17,272.59

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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.