Home / 21,808.10-32,716.80-12,452.60

Finding the Fourth Proportional to 21,808.10, 32,716.80 and 12,452.60

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Solution

The fourth proportional to 21,808.10, 32,716.80 and 12,452.60 is: 18,681.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.10 : 32,716.80 = 12,452.60 : x
  2. Step 2: Convert to fraction form
    21,808.10/32,716.80 = 12,452.60/x
  3. Step 3: Cross multiply
    21,808.10x = 32,716.80 × 12,452.60
  4. Step 4: Simplify right side
    21,808.10x = 407,409,223.68
  5. Step 5: Solve for x
    x = 407,409,223.68/21,808.10
  6. Step 6: Final answer
    x = 18,681.56

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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.