Home / 21,845.80-32,768.88-13,549.96

Finding the Fourth Proportional to 21,845.80, 32,768.88 and 13,549.96

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Solution

The fourth proportional to 21,845.80, 32,768.88 and 13,549.96 is: 20,325.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,845.80 : 32,768.88 = 13,549.96 : x
  2. Step 2: Convert to fraction form
    21,845.80/32,768.88 = 13,549.96/x
  3. Step 3: Cross multiply
    21,845.80x = 32,768.88 × 13,549.96
  4. Step 4: Simplify right side
    21,845.80x = 444,017,013.24
  5. Step 5: Solve for x
    x = 444,017,013.24/21,845.80
  6. Step 6: Final answer
    x = 20,325.05

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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.