Home / 21,135.96-29,168.55-11,704.50

Finding the Fourth Proportional to 21,135.96, 29,168.55 and 11,704.50

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Solution

The fourth proportional to 21,135.96, 29,168.55 and 11,704.50 is: 16,152.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.96 : 29,168.55 = 11,704.50 : x
  2. Step 2: Convert to fraction form
    21,135.96/29,168.55 = 11,704.50/x
  3. Step 3: Cross multiply
    21,135.96x = 29,168.55 × 11,704.50
  4. Step 4: Simplify right side
    21,135.96x = 341,403,293.48
  5. Step 5: Solve for x
    x = 341,403,293.48/21,135.96
  6. Step 6: Final answer
    x = 16,152.72

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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.