Home / 18,320.03-27,485.19-5,172.51

Finding the Fourth Proportional to 18,320.03, 27,485.19 and 5,172.51

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Solution

The fourth proportional to 18,320.03, 27,485.19 and 5,172.51 is: 7,760.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.03 : 27,485.19 = 5,172.51 : x
  2. Step 2: Convert to fraction form
    18,320.03/27,485.19 = 5,172.51/x
  3. Step 3: Cross multiply
    18,320.03x = 27,485.19 × 5,172.51
  4. Step 4: Simplify right side
    18,320.03x = 142,167,420.13
  5. Step 5: Solve for x
    x = 142,167,420.13/18,320.03
  6. Step 6: Final answer
    x = 7,760.22

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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.