Home / 15,075.09-20,803.67-8,361.33

Finding the Fourth Proportional to 15,075.09, 20,803.67 and 8,361.33

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Solution

The fourth proportional to 15,075.09, 20,803.67 and 8,361.33 is: 11,538.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.09 : 20,803.67 = 8,361.33 : x
  2. Step 2: Convert to fraction form
    15,075.09/20,803.67 = 8,361.33/x
  3. Step 3: Cross multiply
    15,075.09x = 20,803.67 × 8,361.33
  4. Step 4: Simplify right side
    15,075.09x = 173,946,350.08
  5. Step 5: Solve for x
    x = 173,946,350.08/15,075.09
  6. Step 6: Final answer
    x = 11,538.66

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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.