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Finding the Fourth Proportional to 28,910, 43,365 and 10,442

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Solution

The fourth proportional to 28,910, 43,365 and 10,442 is: 15,663

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,910 : 43,365 = 10,442 : x
  2. Step 2: Convert to fraction form
    28,910/43,365 = 10,442/x
  3. Step 3: Cross multiply
    28,910x = 43,365 × 10,442
  4. Step 4: Simplify right side
    28,910x = 452,817,330
  5. Step 5: Solve for x
    x = 452,817,330/28,910
  6. Step 6: Final answer
    x = 15,663

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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.