Home / 13,104.20-19,655.40-4,219.40

Finding the Fourth Proportional to 13,104.20, 19,655.40 and 4,219.40

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Solution

The fourth proportional to 13,104.20, 19,655.40 and 4,219.40 is: 6,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.20 : 19,655.40 = 4,219.40 : x
  2. Step 2: Convert to fraction form
    13,104.20/19,655.40 = 4,219.40/x
  3. Step 3: Cross multiply
    13,104.20x = 19,655.40 × 4,219.40
  4. Step 4: Simplify right side
    13,104.20x = 82,933,994.76
  5. Step 5: Solve for x
    x = 82,933,994.76/13,104.20
  6. Step 6: Final answer
    x = 6,328.81

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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.