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Finding the Fourth Proportional to 21,848, 32,772 and 5,432

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Solution

The fourth proportional to 21,848, 32,772 and 5,432 is: 8,148

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,848 : 32,772 = 5,432 : x
  2. Step 2: Convert to fraction form
    21,848/32,772 = 5,432/x
  3. Step 3: Cross multiply
    21,848x = 32,772 × 5,432
  4. Step 4: Simplify right side
    21,848x = 178,017,504
  5. Step 5: Solve for x
    x = 178,017,504/21,848
  6. Step 6: Final answer
    x = 8,148

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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.