Home / 21,313.82-29,416.84-13,362.86

Finding the Fourth Proportional to 21,313.82, 29,416.84 and 13,362.86

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Solution

The fourth proportional to 21,313.82, 29,416.84 and 13,362.86 is: 18,443.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.82 : 29,416.84 = 13,362.86 : x
  2. Step 2: Convert to fraction form
    21,313.82/29,416.84 = 13,362.86/x
  3. Step 3: Cross multiply
    21,313.82x = 29,416.84 × 13,362.86
  4. Step 4: Simplify right side
    21,313.82x = 393,093,114.56
  5. Step 5: Solve for x
    x = 393,093,114.56/21,313.82
  6. Step 6: Final answer
    x = 18,443.11

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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.