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Finding the Fourth Proportional to 19,511.68, 29,286.72 and 14,302.72

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Solution

The fourth proportional to 19,511.68, 29,286.72 and 14,302.72 is: 21,468.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,511.68 : 29,286.72 = 14,302.72 : x
  2. Step 2: Convert to fraction form
    19,511.68/29,286.72 = 14,302.72/x
  3. Step 3: Cross multiply
    19,511.68x = 29,286.72 × 14,302.72
  4. Step 4: Simplify right side
    19,511.68x = 418,879,755.88
  5. Step 5: Solve for x
    x = 418,879,755.88/19,511.68
  6. Step 6: Final answer
    x = 21,468.15

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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.