Home / 13,351.31-20,039.00-7,116.51

Finding the Fourth Proportional to 13,351.31, 20,039.00 and 7,116.51

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Solution

The fourth proportional to 13,351.31, 20,039.00 and 7,116.51 is: 10,681.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.31 : 20,039.00 = 7,116.51 : x
  2. Step 2: Convert to fraction form
    13,351.31/20,039.00 = 7,116.51/x
  3. Step 3: Cross multiply
    13,351.31x = 20,039.00 × 7,116.51
  4. Step 4: Simplify right side
    13,351.31x = 142,607,708.31
  5. Step 5: Solve for x
    x = 142,607,708.31/13,351.31
  6. Step 6: Final answer
    x = 10,681.18

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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.