Home / 13,825.48-20,720.46-8,281.96

Finding the Fourth Proportional to 13,825.48, 20,720.46 and 8,281.96

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Solution

The fourth proportional to 13,825.48, 20,720.46 and 8,281.96 is: 12,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.48 : 20,720.46 = 8,281.96 : x
  2. Step 2: Convert to fraction form
    13,825.48/20,720.46 = 8,281.96/x
  3. Step 3: Cross multiply
    13,825.48x = 20,720.46 × 8,281.96
  4. Step 4: Simplify right side
    13,825.48x = 171,606,020.90
  5. Step 5: Solve for x
    x = 171,606,020.90/13,825.48
  6. Step 6: Final answer
    x = 12,412.30

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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.