Home / 21,579.36-32,346-15,404.64

Finding the Fourth Proportional to 21,579.36, 32,346 and 15,404.64

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Solution

The fourth proportional to 21,579.36, 32,346 and 15,404.64 is: 23,090.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.36 : 32,346 = 15,404.64 : x
  2. Step 2: Convert to fraction form
    21,579.36/32,346 = 15,404.64/x
  3. Step 3: Cross multiply
    21,579.36x = 32,346 × 15,404.64
  4. Step 4: Simplify right side
    21,579.36x = 498,278,485.44
  5. Step 5: Solve for x
    x = 498,278,485.44/21,579.36
  6. Step 6: Final answer
    x = 23,090.51

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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.