Home / 13,111.54-18,093.31-7,143.19

Finding the Fourth Proportional to 13,111.54, 18,093.31 and 7,143.19

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Solution

The fourth proportional to 13,111.54, 18,093.31 and 7,143.19 is: 9,857.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,111.54 : 18,093.31 = 7,143.19 : x
  2. Step 2: Convert to fraction form
    13,111.54/18,093.31 = 7,143.19/x
  3. Step 3: Cross multiply
    13,111.54x = 18,093.31 × 7,143.19
  4. Step 4: Simplify right side
    13,111.54x = 129,243,887.97
  5. Step 5: Solve for x
    x = 129,243,887.97/13,111.54
  6. Step 6: Final answer
    x = 9,857.26

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1.5x scale

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.