Home / 21,729.53-29,985.99-12,297.89

Finding the Fourth Proportional to 21,729.53, 29,985.99 and 12,297.89

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Solution

The fourth proportional to 21,729.53, 29,985.99 and 12,297.89 is: 16,970.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,729.53 : 29,985.99 = 12,297.89 : x
  2. Step 2: Convert to fraction form
    21,729.53/29,985.99 = 12,297.89/x
  3. Step 3: Cross multiply
    21,729.53x = 29,985.99 × 12,297.89
  4. Step 4: Simplify right side
    21,729.53x = 368,764,406.56
  5. Step 5: Solve for x
    x = 368,764,406.56/21,729.53
  6. Step 6: Final answer
    x = 16,970.66

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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.