Home / 21,010.19-28,993.68-11,450.16

Finding the Fourth Proportional to 21,010.19, 28,993.68 and 11,450.16

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Solution

The fourth proportional to 21,010.19, 28,993.68 and 11,450.16 is: 15,801.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.19 : 28,993.68 = 11,450.16 : x
  2. Step 2: Convert to fraction form
    21,010.19/28,993.68 = 11,450.16/x
  3. Step 3: Cross multiply
    21,010.19x = 28,993.68 × 11,450.16
  4. Step 4: Simplify right side
    21,010.19x = 331,982,130.02
  5. Step 5: Solve for x
    x = 331,982,130.02/21,010.19
  6. Step 6: Final answer
    x = 15,801.01

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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.