Home / 21,010.93-28,994.71-11,450.90

Finding the Fourth Proportional to 21,010.93, 28,994.71 and 11,450.90

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Solution

The fourth proportional to 21,010.93, 28,994.71 and 11,450.90 is: 15,802.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.93 : 28,994.71 = 11,450.90 : x
  2. Step 2: Convert to fraction form
    21,010.93/28,994.71 = 11,450.90/x
  3. Step 3: Cross multiply
    21,010.93x = 28,994.71 × 11,450.90
  4. Step 4: Simplify right side
    21,010.93x = 332,015,524.74
  5. Step 5: Solve for x
    x = 332,015,524.74/21,010.93
  6. Step 6: Final answer
    x = 15,802.04

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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.