Home / 13,211.80-19,826.30-5,722.68

Finding the Fourth Proportional to 13,211.80, 19,826.30 and 5,722.68

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Solution

The fourth proportional to 13,211.80, 19,826.30 and 5,722.68 is: 8,587.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.80 : 19,826.30 = 5,722.68 : x
  2. Step 2: Convert to fraction form
    13,211.80/19,826.30 = 5,722.68/x
  3. Step 3: Cross multiply
    13,211.80x = 19,826.30 × 5,722.68
  4. Step 4: Simplify right side
    13,211.80x = 113,459,570.48
  5. Step 5: Solve for x
    x = 113,459,570.48/13,211.80
  6. Step 6: Final answer
    x = 8,587.75

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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.