Home / 13,379.77-20,069.70-3,518.22

Finding the Fourth Proportional to 13,379.77, 20,069.70 and 3,518.22

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Solution

The fourth proportional to 13,379.77, 20,069.70 and 3,518.22 is: 5,277.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.77 : 20,069.70 = 3,518.22 : x
  2. Step 2: Convert to fraction form
    13,379.77/20,069.70 = 3,518.22/x
  3. Step 3: Cross multiply
    13,379.77x = 20,069.70 × 3,518.22
  4. Step 4: Simplify right side
    13,379.77x = 70,609,619.93
  5. Step 5: Solve for x
    x = 70,609,619.93/13,379.77
  6. Step 6: Final answer
    x = 5,277.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.