Home / 13,805.21-20,709.76-4,443.05

Finding the Fourth Proportional to 13,805.21, 20,709.76 and 4,443.05

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Solution

The fourth proportional to 13,805.21, 20,709.76 and 4,443.05 is: 6,665.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,805.21 : 20,709.76 = 4,443.05 : x
  2. Step 2: Convert to fraction form
    13,805.21/20,709.76 = 4,443.05/x
  3. Step 3: Cross multiply
    13,805.21x = 20,709.76 × 4,443.05
  4. Step 4: Simplify right side
    13,805.21x = 92,014,395.62
  5. Step 5: Solve for x
    x = 92,014,395.62/13,805.21
  6. Step 6: Final answer
    x = 6,665.20

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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.