Home / 22,448.21-30,980.34-12,378.60

Finding the Fourth Proportional to 22,448.21, 30,980.34 and 12,378.60

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Solution

The fourth proportional to 22,448.21, 30,980.34 and 12,378.60 is: 17,083.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,448.21 : 30,980.34 = 12,378.60 : x
  2. Step 2: Convert to fraction form
    22,448.21/30,980.34 = 12,378.60/x
  3. Step 3: Cross multiply
    22,448.21x = 30,980.34 × 12,378.60
  4. Step 4: Simplify right side
    22,448.21x = 383,493,236.72
  5. Step 5: Solve for x
    x = 383,493,236.72/22,448.21
  6. Step 6: Final answer
    x = 17,083.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.