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Finding the Fourth Proportional to 28,063.91, 38,731.91 and 19,560.53

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Solution

The fourth proportional to 28,063.91, 38,731.91 and 19,560.53 is: 26,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,063.91 : 38,731.91 = 19,560.53 : x
  2. Step 2: Convert to fraction form
    28,063.91/38,731.91 = 19,560.53/x
  3. Step 3: Cross multiply
    28,063.91x = 38,731.91 × 19,560.53
  4. Step 4: Simplify right side
    28,063.91x = 757,616,396.05
  5. Step 5: Solve for x
    x = 757,616,396.05/28,063.91
  6. Step 6: Final answer
    x = 26,996.11

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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.