Home / 21,671.52-32,461.92-13,840.48

Finding the Fourth Proportional to 21,671.52, 32,461.92 and 13,840.48

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Solution

The fourth proportional to 21,671.52, 32,461.92 and 13,840.48 is: 20,731.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.52 : 32,461.92 = 13,840.48 : x
  2. Step 2: Convert to fraction form
    21,671.52/32,461.92 = 13,840.48/x
  3. Step 3: Cross multiply
    21,671.52x = 32,461.92 × 13,840.48
  4. Step 4: Simplify right side
    21,671.52x = 449,288,554.52
  5. Step 5: Solve for x
    x = 449,288,554.52/21,671.52
  6. Step 6: Final answer
    x = 20,731.75

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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.