Home / 12,408.37-18,612.65-3,643.43

Finding the Fourth Proportional to 12,408.37, 18,612.65 and 3,643.43

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Solution

The fourth proportional to 12,408.37, 18,612.65 and 3,643.43 is: 5,465.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.37 : 18,612.65 = 3,643.43 : x
  2. Step 2: Convert to fraction form
    12,408.37/18,612.65 = 3,643.43/x
  3. Step 3: Cross multiply
    12,408.37x = 18,612.65 × 3,643.43
  4. Step 4: Simplify right side
    12,408.37x = 67,813,803.43
  5. Step 5: Solve for x
    x = 67,813,803.43/12,408.37
  6. Step 6: Final answer
    x = 5,465.17

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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.