Home / 30,453.80-45,675.11-13,809.83

Finding the Fourth Proportional to 30,453.80, 45,675.11 and 13,809.83

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Solution

The fourth proportional to 30,453.80, 45,675.11 and 13,809.83 is: 20,712.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,453.80 : 45,675.11 = 13,809.83 : x
  2. Step 2: Convert to fraction form
    30,453.80/45,675.11 = 13,809.83/x
  3. Step 3: Cross multiply
    30,453.80x = 45,675.11 × 13,809.83
  4. Step 4: Simplify right side
    30,453.80x = 630,765,310.48
  5. Step 5: Solve for x
    x = 630,765,310.48/30,453.80
  6. Step 6: Final answer
    x = 20,712.21

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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.