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Finding the Fourth Proportional to 28,764, 43,146 and 12,348

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Solution

The fourth proportional to 28,764, 43,146 and 12,348 is: 18,522

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,764 : 43,146 = 12,348 : x
  2. Step 2: Convert to fraction form
    28,764/43,146 = 12,348/x
  3. Step 3: Cross multiply
    28,764x = 43,146 × 12,348
  4. Step 4: Simplify right side
    28,764x = 532,766,808
  5. Step 5: Solve for x
    x = 532,766,808/28,764
  6. Step 6: Final answer
    x = 18,522

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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.