Home / 22,261.16-30,719.74-12,189.21

Finding the Fourth Proportional to 22,261.16, 30,719.74 and 12,189.21

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Solution

The fourth proportional to 22,261.16, 30,719.74 and 12,189.21 is: 16,820.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,261.16 : 30,719.74 = 12,189.21 : x
  2. Step 2: Convert to fraction form
    22,261.16/30,719.74 = 12,189.21/x
  3. Step 3: Cross multiply
    22,261.16x = 30,719.74 × 12,189.21
  4. Step 4: Simplify right side
    22,261.16x = 374,449,362.01
  5. Step 5: Solve for x
    x = 374,449,362.01/22,261.16
  6. Step 6: Final answer
    x = 16,820.75

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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.