Home / 13,137.41-18,120.62-7,828.13

Finding the Fourth Proportional to 13,137.41, 18,120.62 and 7,828.13

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Solution

The fourth proportional to 13,137.41, 18,120.62 and 7,828.13 is: 10,797.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.41 : 18,120.62 = 7,828.13 : x
  2. Step 2: Convert to fraction form
    13,137.41/18,120.62 = 7,828.13/x
  3. Step 3: Cross multiply
    13,137.41x = 18,120.62 × 7,828.13
  4. Step 4: Simplify right side
    13,137.41x = 141,850,439.30
  5. Step 5: Solve for x
    x = 141,850,439.30/13,137.41
  6. Step 6: Final answer
    x = 10,797.45

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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.