Home / 12,719.08-17,551.36-7,129

Finding the Fourth Proportional to 12,719.08, 17,551.36 and 7,129

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Solution

The fourth proportional to 12,719.08, 17,551.36 and 7,129 is: 9,837.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.08 : 17,551.36 = 7,129 : x
  2. Step 2: Convert to fraction form
    12,719.08/17,551.36 = 7,129/x
  3. Step 3: Cross multiply
    12,719.08x = 17,551.36 × 7,129
  4. Step 4: Simplify right side
    12,719.08x = 125,123,645.44
  5. Step 5: Solve for x
    x = 125,123,645.44/12,719.08
  6. Step 6: Final answer
    x = 9,837.48

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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.