Home / 21,135.56-29,167.01-12,183.01

Finding the Fourth Proportional to 21,135.56, 29,167.01 and 12,183.01

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Solution

The fourth proportional to 21,135.56, 29,167.01 and 12,183.01 is: 16,812.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.56 : 29,167.01 = 12,183.01 : x
  2. Step 2: Convert to fraction form
    21,135.56/29,167.01 = 12,183.01/x
  3. Step 3: Cross multiply
    21,135.56x = 29,167.01 × 12,183.01
  4. Step 4: Simplify right side
    21,135.56x = 355,341,886.35
  5. Step 5: Solve for x
    x = 355,341,886.35/21,135.56
  6. Step 6: Final answer
    x = 16,812.52

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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.