Home / 21,010.94-28,995.11-11,450.83

Finding the Fourth Proportional to 21,010.94, 28,995.11 and 11,450.83

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Solution

The fourth proportional to 21,010.94, 28,995.11 and 11,450.83 is: 15,802.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.94 : 28,995.11 = 11,450.83 : x
  2. Step 2: Convert to fraction form
    21,010.94/28,995.11 = 11,450.83/x
  3. Step 3: Cross multiply
    21,010.94x = 28,995.11 × 11,450.83
  4. Step 4: Simplify right side
    21,010.94x = 332,018,075.44
  5. Step 5: Solve for x
    x = 332,018,075.44/21,010.94
  6. Step 6: Final answer
    x = 15,802.15

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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.