Home / 18,448.41-27,669.86-5,120.00

Finding the Fourth Proportional to 18,448.41, 27,669.86 and 5,120.00

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Solution

The fourth proportional to 18,448.41, 27,669.86 and 5,120.00 is: 7,679.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,448.41 : 27,669.86 = 5,120.00 : x
  2. Step 2: Convert to fraction form
    18,448.41/27,669.86 = 5,120.00/x
  3. Step 3: Cross multiply
    18,448.41x = 27,669.86 × 5,120.00
  4. Step 4: Simplify right side
    18,448.41x = 141,669,782.00
  5. Step 5: Solve for x
    x = 141,669,782.00/18,448.41
  6. Step 6: Final answer
    x = 7,679.24

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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.