Home / 30,853.22-42,568.08-18,912.20

Finding the Fourth Proportional to 30,853.22, 42,568.08 and 18,912.20

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Solution

The fourth proportional to 30,853.22, 42,568.08 and 18,912.20 is: 26,093.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,853.22 : 42,568.08 = 18,912.20 : x
  2. Step 2: Convert to fraction form
    30,853.22/42,568.08 = 18,912.20/x
  3. Step 3: Cross multiply
    30,853.22x = 42,568.08 × 18,912.20
  4. Step 4: Simplify right side
    30,853.22x = 805,056,042.58
  5. Step 5: Solve for x
    x = 805,056,042.58/30,853.22
  6. Step 6: Final answer
    x = 26,093.10

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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.