Home / 21,010.23-28,993.08-11,450.09

Finding the Fourth Proportional to 21,010.23, 28,993.08 and 11,450.09

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Solution

The fourth proportional to 21,010.23, 28,993.08 and 11,450.09 is: 15,800.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.23 : 28,993.08 = 11,450.09 : x
  2. Step 2: Convert to fraction form
    21,010.23/28,993.08 = 11,450.09/x
  3. Step 3: Cross multiply
    21,010.23x = 28,993.08 × 11,450.09
  4. Step 4: Simplify right side
    21,010.23x = 331,973,295.51
  5. Step 5: Solve for x
    x = 331,973,295.51/21,010.23
  6. Step 6: Final answer
    x = 15,800.56

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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.