Home / 30,234.63-41,679.84-21,131.73

Finding the Fourth Proportional to 30,234.63, 41,679.84 and 21,131.73

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Solution

The fourth proportional to 30,234.63, 41,679.84 and 21,131.73 is: 29,131.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,234.63 : 41,679.84 = 21,131.73 : x
  2. Step 2: Convert to fraction form
    30,234.63/41,679.84 = 21,131.73/x
  3. Step 3: Cross multiply
    30,234.63x = 41,679.84 × 21,131.73
  4. Step 4: Simplify right side
    30,234.63x = 880,767,125.32
  5. Step 5: Solve for x
    x = 880,767,125.32/30,234.63
  6. Step 6: Final answer
    x = 29,131.07

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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.