Home / 21,075.04-31,608.78-7,927.84

Finding the Fourth Proportional to 21,075.04, 31,608.78 and 7,927.84

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Solution

The fourth proportional to 21,075.04, 31,608.78 and 7,927.84 is: 11,890.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.04 : 31,608.78 = 7,927.84 : x
  2. Step 2: Convert to fraction form
    21,075.04/31,608.78 = 7,927.84/x
  3. Step 3: Cross multiply
    21,075.04x = 31,608.78 × 7,927.84
  4. Step 4: Simplify right side
    21,075.04x = 250,589,350.44
  5. Step 5: Solve for x
    x = 250,589,350.44/21,075.04
  6. Step 6: Final answer
    x = 11,890.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.