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Finding the Fourth Proportional to 38,438.46, 53,045.06 and 21,671.46

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Solution

The fourth proportional to 38,438.46, 53,045.06 and 21,671.46 is: 29,906.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,438.46 : 53,045.06 = 21,671.46 : x
  2. Step 2: Convert to fraction form
    38,438.46/53,045.06 = 21,671.46/x
  3. Step 3: Cross multiply
    38,438.46x = 53,045.06 × 21,671.46
  4. Step 4: Simplify right side
    38,438.46x = 1,149,563,787.63
  5. Step 5: Solve for x
    x = 1,149,563,787.63/38,438.46
  6. Step 6: Final answer
    x = 29,906.60

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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.