Home / 12,408.23-18,615.48-3,643.15

Finding the Fourth Proportional to 12,408.23, 18,615.48 and 3,643.15

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Solution

The fourth proportional to 12,408.23, 18,615.48 and 3,643.15 is: 5,465.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.23 : 18,615.48 = 3,643.15 : x
  2. Step 2: Convert to fraction form
    12,408.23/18,615.48 = 3,643.15/x
  3. Step 3: Cross multiply
    12,408.23x = 18,615.48 × 3,643.15
  4. Step 4: Simplify right side
    12,408.23x = 67,818,892.88
  5. Step 5: Solve for x
    x = 67,818,892.88/12,408.23
  6. Step 6: Final answer
    x = 5,465.64

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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.