Home / 13,381.41-18,466.47-8,075.20

Finding the Fourth Proportional to 13,381.41, 18,466.47 and 8,075.20

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Solution

The fourth proportional to 13,381.41, 18,466.47 and 8,075.20 is: 11,143.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.41 : 18,466.47 = 8,075.20 : x
  2. Step 2: Convert to fraction form
    13,381.41/18,466.47 = 8,075.20/x
  3. Step 3: Cross multiply
    13,381.41x = 18,466.47 × 8,075.20
  4. Step 4: Simplify right side
    13,381.41x = 149,120,438.54
  5. Step 5: Solve for x
    x = 149,120,438.54/13,381.41
  6. Step 6: Final answer
    x = 11,143.85

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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.