Home / 13,418.96-18,518.12-7,450.48

Finding the Fourth Proportional to 13,418.96, 18,518.12 and 7,450.48

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Solution

The fourth proportional to 13,418.96, 18,518.12 and 7,450.48 is: 10,281.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.96 : 18,518.12 = 7,450.48 : x
  2. Step 2: Convert to fraction form
    13,418.96/18,518.12 = 7,450.48/x
  3. Step 3: Cross multiply
    13,418.96x = 18,518.12 × 7,450.48
  4. Step 4: Simplify right side
    13,418.96x = 137,968,882.70
  5. Step 5: Solve for x
    x = 137,968,882.70/13,418.96
  6. Step 6: Final answer
    x = 10,281.64

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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.