Home / 13,723.71-18,937.20-7,755.36

Finding the Fourth Proportional to 13,723.71, 18,937.20 and 7,755.36

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Solution

The fourth proportional to 13,723.71, 18,937.20 and 7,755.36 is: 10,701.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.71 : 18,937.20 = 7,755.36 : x
  2. Step 2: Convert to fraction form
    13,723.71/18,937.20 = 7,755.36/x
  3. Step 3: Cross multiply
    13,723.71x = 18,937.20 × 7,755.36
  4. Step 4: Simplify right side
    13,723.71x = 146,864,869.76
  5. Step 5: Solve for x
    x = 146,864,869.76/13,723.71
  6. Step 6: Final answer
    x = 10,701.54

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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.