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Finding the Fourth Proportional to 21,851.04, 32,777.04 and 8,709.60

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Solution

The fourth proportional to 21,851.04, 32,777.04 and 8,709.60 is: 13,064.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,851.04 : 32,777.04 = 8,709.60 : x
  2. Step 2: Convert to fraction form
    21,851.04/32,777.04 = 8,709.60/x
  3. Step 3: Cross multiply
    21,851.04x = 32,777.04 × 8,709.60
  4. Step 4: Simplify right side
    21,851.04x = 285,474,907.58
  5. Step 5: Solve for x
    x = 285,474,907.58/21,851.04
  6. Step 6: Final answer
    x = 13,064.59

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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.