Home / 13,909.08-20,863.41-3,379.19

Finding the Fourth Proportional to 13,909.08, 20,863.41 and 3,379.19

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Solution

The fourth proportional to 13,909.08, 20,863.41 and 3,379.19 is: 5,068.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.08 : 20,863.41 = 3,379.19 : x
  2. Step 2: Convert to fraction form
    13,909.08/20,863.41 = 3,379.19/x
  3. Step 3: Cross multiply
    13,909.08x = 20,863.41 × 3,379.19
  4. Step 4: Simplify right side
    13,909.08x = 70,501,309.45
  5. Step 5: Solve for x
    x = 70,501,309.45/13,909.08
  6. Step 6: Final answer
    x = 5,068.72

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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.