Home / 13,122-18,109.08-7,533.36

Finding the Fourth Proportional to 13,122, 18,109.08 and 7,533.36

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Solution

The fourth proportional to 13,122, 18,109.08 and 7,533.36 is: 10,396.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122 : 18,109.08 = 7,533.36 : x
  2. Step 2: Convert to fraction form
    13,122/18,109.08 = 7,533.36/x
  3. Step 3: Cross multiply
    13,122x = 18,109.08 × 7,533.36
  4. Step 4: Simplify right side
    13,122x = 136,422,218.91
  5. Step 5: Solve for x
    x = 136,422,218.91/13,122
  6. Step 6: Final answer
    x = 10,396.45

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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.