Home / 21,783.80-32,662.51-9,773.75

Finding the Fourth Proportional to 21,783.80, 32,662.51 and 9,773.75

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Solution

The fourth proportional to 21,783.80, 32,662.51 and 9,773.75 is: 14,654.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783.80 : 32,662.51 = 9,773.75 : x
  2. Step 2: Convert to fraction form
    21,783.80/32,662.51 = 9,773.75/x
  3. Step 3: Cross multiply
    21,783.80x = 32,662.51 × 9,773.75
  4. Step 4: Simplify right side
    21,783.80x = 319,235,135.59
  5. Step 5: Solve for x
    x = 319,235,135.59/21,783.80
  6. Step 6: Final answer
    x = 14,654.71

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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.