Home / 18,378.08-25,361.72-11,207.98

Finding the Fourth Proportional to 18,378.08, 25,361.72 and 11,207.98

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Solution

The fourth proportional to 18,378.08, 25,361.72 and 11,207.98 is: 15,466.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.08 : 25,361.72 = 11,207.98 : x
  2. Step 2: Convert to fraction form
    18,378.08/25,361.72 = 11,207.98/x
  3. Step 3: Cross multiply
    18,378.08x = 25,361.72 × 11,207.98
  4. Step 4: Simplify right side
    18,378.08x = 284,253,650.53
  5. Step 5: Solve for x
    x = 284,253,650.53/18,378.08
  6. Step 6: Final answer
    x = 15,466.99

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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.