Home / 22,261.04-30,718.88-12,189.60

Finding the Fourth Proportional to 22,261.04, 30,718.88 and 12,189.60

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Solution

The fourth proportional to 22,261.04, 30,718.88 and 12,189.60 is: 16,820.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,261.04 : 30,718.88 = 12,189.60 : x
  2. Step 2: Convert to fraction form
    22,261.04/30,718.88 = 12,189.60/x
  3. Step 3: Cross multiply
    22,261.04x = 30,718.88 × 12,189.60
  4. Step 4: Simplify right side
    22,261.04x = 374,450,844.41
  5. Step 5: Solve for x
    x = 374,450,844.41/22,261.04
  6. Step 6: Final answer
    x = 16,820.91

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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.