Home / 13,619.34-20,430.66-4,855.14

Finding the Fourth Proportional to 13,619.34, 20,430.66 and 4,855.14

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Solution

The fourth proportional to 13,619.34, 20,430.66 and 4,855.14 is: 7,283.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.34 : 20,430.66 = 4,855.14 : x
  2. Step 2: Convert to fraction form
    13,619.34/20,430.66 = 4,855.14/x
  3. Step 3: Cross multiply
    13,619.34x = 20,430.66 × 4,855.14
  4. Step 4: Simplify right side
    13,619.34x = 99,193,714.59
  5. Step 5: Solve for x
    x = 99,193,714.59/13,619.34
  6. Step 6: Final answer
    x = 7,283.30

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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.