Home / 21,464-32,213.44-11,078.72

Finding the Fourth Proportional to 21,464, 32,213.44 and 11,078.72

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Solution

The fourth proportional to 21,464, 32,213.44 and 11,078.72 is: 16,627.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,464 : 32,213.44 = 11,078.72 : x
  2. Step 2: Convert to fraction form
    21,464/32,213.44 = 11,078.72/x
  3. Step 3: Cross multiply
    21,464x = 32,213.44 × 11,078.72
  4. Step 4: Simplify right side
    21,464x = 356,883,682.00
  5. Step 5: Solve for x
    x = 356,883,682.00/21,464
  6. Step 6: Final answer
    x = 16,627.08

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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.