Home / 20,408.07-30,615.69-7,257.35

Finding the Fourth Proportional to 20,408.07, 30,615.69 and 7,257.35

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Solution

The fourth proportional to 20,408.07, 30,615.69 and 7,257.35 is: 10,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408.07 : 30,615.69 = 7,257.35 : x
  2. Step 2: Convert to fraction form
    20,408.07/30,615.69 = 7,257.35/x
  3. Step 3: Cross multiply
    20,408.07x = 30,615.69 × 7,257.35
  4. Step 4: Simplify right side
    20,408.07x = 222,188,777.82
  5. Step 5: Solve for x
    x = 222,188,777.82/20,408.07
  6. Step 6: Final answer
    x = 10,887.30

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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.