Home / 21,629.55-32,398.94-13,728.00

Finding the Fourth Proportional to 21,629.55, 32,398.94 and 13,728.00

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Solution

The fourth proportional to 21,629.55, 32,398.94 and 13,728.00 is: 20,563.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,629.55 : 32,398.94 = 13,728.00 : x
  2. Step 2: Convert to fraction form
    21,629.55/32,398.94 = 13,728.00/x
  3. Step 3: Cross multiply
    21,629.55x = 32,398.94 × 13,728.00
  4. Step 4: Simplify right side
    21,629.55x = 444,772,544.67
  5. Step 5: Solve for x
    x = 444,772,544.67/21,629.55
  6. Step 6: Final answer
    x = 20,563.19

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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.