Home / 13,825.60-20,723.68-6,421.44

Finding the Fourth Proportional to 13,825.60, 20,723.68 and 6,421.44

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Solution

The fourth proportional to 13,825.60, 20,723.68 and 6,421.44 is: 9,625.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.60 : 20,723.68 = 6,421.44 : x
  2. Step 2: Convert to fraction form
    13,825.60/20,723.68 = 6,421.44/x
  3. Step 3: Cross multiply
    13,825.60x = 20,723.68 × 6,421.44
  4. Step 4: Simplify right side
    13,825.60x = 133,075,867.70
  5. Step 5: Solve for x
    x = 133,075,867.70/13,825.60
  6. Step 6: Final answer
    x = 9,625.32

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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.