Home / 13,311.22-18,370.32-7,342.90

Finding the Fourth Proportional to 13,311.22, 18,370.32 and 7,342.90

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Solution

The fourth proportional to 13,311.22, 18,370.32 and 7,342.90 is: 10,133.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.22 : 18,370.32 = 7,342.90 : x
  2. Step 2: Convert to fraction form
    13,311.22/18,370.32 = 7,342.90/x
  3. Step 3: Cross multiply
    13,311.22x = 18,370.32 × 7,342.90
  4. Step 4: Simplify right side
    13,311.22x = 134,891,422.73
  5. Step 5: Solve for x
    x = 134,891,422.73/13,311.22
  6. Step 6: Final answer
    x = 10,133.66

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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.