Home / 21,313.13-31,944.78-12,554.19

Finding the Fourth Proportional to 21,313.13, 31,944.78 and 12,554.19

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Solution

The fourth proportional to 21,313.13, 31,944.78 and 12,554.19 is: 18,816.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.13 : 31,944.78 = 12,554.19 : x
  2. Step 2: Convert to fraction form
    21,313.13/31,944.78 = 12,554.19/x
  3. Step 3: Cross multiply
    21,313.13x = 31,944.78 × 12,554.19
  4. Step 4: Simplify right side
    21,313.13x = 401,040,837.63
  5. Step 5: Solve for x
    x = 401,040,837.63/21,313.13
  6. Step 6: Final answer
    x = 18,816.61

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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.