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Finding the Fourth Proportional to 28,860, 43,290 and 10,392

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Solution

The fourth proportional to 28,860, 43,290 and 10,392 is: 15,588

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,860 : 43,290 = 10,392 : x
  2. Step 2: Convert to fraction form
    28,860/43,290 = 10,392/x
  3. Step 3: Cross multiply
    28,860x = 43,290 × 10,392
  4. Step 4: Simplify right side
    28,860x = 449,869,680
  5. Step 5: Solve for x
    x = 449,869,680/28,860
  6. Step 6: Final answer
    x = 15,588

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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.