Home / 30,422.10-41,958.38-18,485.20

Finding the Fourth Proportional to 30,422.10, 41,958.38 and 18,485.20

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Solution

The fourth proportional to 30,422.10, 41,958.38 and 18,485.20 is: 25,494.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,422.10 : 41,958.38 = 18,485.20 : x
  2. Step 2: Convert to fraction form
    30,422.10/41,958.38 = 18,485.20/x
  3. Step 3: Cross multiply
    30,422.10x = 41,958.38 × 18,485.20
  4. Step 4: Simplify right side
    30,422.10x = 775,609,045.98
  5. Step 5: Solve for x
    x = 775,609,045.98/30,422.10
  6. Step 6: Final answer
    x = 25,494.92

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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.