Home / 13,386.36-18,474.24-7,418.61

Finding the Fourth Proportional to 13,386.36, 18,474.24 and 7,418.61

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Solution

The fourth proportional to 13,386.36, 18,474.24 and 7,418.61 is: 10,238.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.36 : 18,474.24 = 7,418.61 : x
  2. Step 2: Convert to fraction form
    13,386.36/18,474.24 = 7,418.61/x
  3. Step 3: Cross multiply
    13,386.36x = 18,474.24 × 7,418.61
  4. Step 4: Simplify right side
    13,386.36x = 137,053,181.61
  5. Step 5: Solve for x
    x = 137,053,181.61/13,386.36
  6. Step 6: Final answer
    x = 10,238.27

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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.