Home / 21,010.47-28,994.05-11,450.43

Finding the Fourth Proportional to 21,010.47, 28,994.05 and 11,450.43

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Solution

The fourth proportional to 21,010.47, 28,994.05 and 11,450.43 is: 15,801.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.47 : 28,994.05 = 11,450.43 : x
  2. Step 2: Convert to fraction form
    21,010.47/28,994.05 = 11,450.43/x
  3. Step 3: Cross multiply
    21,010.47x = 28,994.05 × 11,450.43
  4. Step 4: Simplify right side
    21,010.47x = 331,994,339.94
  5. Step 5: Solve for x
    x = 331,994,339.94/21,010.47
  6. Step 6: Final answer
    x = 15,801.38

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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.