Home / 18,281.67-27,433.85-8,422.35

Finding the Fourth Proportional to 18,281.67, 27,433.85 and 8,422.35

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Solution

The fourth proportional to 18,281.67, 27,433.85 and 8,422.35 is: 12,638.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,281.67 : 27,433.85 = 8,422.35 : x
  2. Step 2: Convert to fraction form
    18,281.67/27,433.85 = 8,422.35/x
  3. Step 3: Cross multiply
    18,281.67x = 27,433.85 × 8,422.35
  4. Step 4: Simplify right side
    18,281.67x = 231,057,444.44
  5. Step 5: Solve for x
    x = 231,057,444.44/18,281.67
  6. Step 6: Final answer
    x = 12,638.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.