Home / 13,656.75-20,486.21-4,422.75

Finding the Fourth Proportional to 13,656.75, 20,486.21 and 4,422.75

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Solution

The fourth proportional to 13,656.75, 20,486.21 and 4,422.75 is: 6,634.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.75 : 20,486.21 = 4,422.75 : x
  2. Step 2: Convert to fraction form
    13,656.75/20,486.21 = 4,422.75/x
  3. Step 3: Cross multiply
    13,656.75x = 20,486.21 × 4,422.75
  4. Step 4: Simplify right side
    13,656.75x = 90,605,363.16
  5. Step 5: Solve for x
    x = 90,605,363.16/13,656.75
  6. Step 6: Final answer
    x = 6,634.47

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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.