Home / 13,673.62-18,869.37-7,705.90

Finding the Fourth Proportional to 13,673.62, 18,869.37 and 7,705.90

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Solution

The fourth proportional to 13,673.62, 18,869.37 and 7,705.90 is: 10,634.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.62 : 18,869.37 = 7,705.90 : x
  2. Step 2: Convert to fraction form
    13,673.62/18,869.37 = 7,705.90/x
  3. Step 3: Cross multiply
    13,673.62x = 18,869.37 × 7,705.90
  4. Step 4: Simplify right side
    13,673.62x = 145,405,478.28
  5. Step 5: Solve for x
    x = 145,405,478.28/13,673.62
  6. Step 6: Final answer
    x = 10,634.01

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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.