Home / 13,616.83-20,389.60-8,922.07

Finding the Fourth Proportional to 13,616.83, 20,389.60 and 8,922.07

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Solution

The fourth proportional to 13,616.83, 20,389.60 and 8,922.07 is: 13,359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,616.83 : 20,389.60 = 8,922.07 : x
  2. Step 2: Convert to fraction form
    13,616.83/20,389.60 = 8,922.07/x
  3. Step 3: Cross multiply
    13,616.83x = 20,389.60 × 8,922.07
  4. Step 4: Simplify right side
    13,616.83x = 181,917,438.47
  5. Step 5: Solve for x
    x = 181,917,438.47/13,616.83
  6. Step 6: Final answer
    x = 13,359.75

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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.