Home / 18,205.21-25,130.94-12,240.34

Finding the Fourth Proportional to 18,205.21, 25,130.94 and 12,240.34

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Solution

The fourth proportional to 18,205.21, 25,130.94 and 12,240.34 is: 16,896.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,205.21 : 25,130.94 = 12,240.34 : x
  2. Step 2: Convert to fraction form
    18,205.21/25,130.94 = 12,240.34/x
  3. Step 3: Cross multiply
    18,205.21x = 25,130.94 × 12,240.34
  4. Step 4: Simplify right side
    18,205.21x = 307,611,250.12
  5. Step 5: Solve for x
    x = 307,611,250.12/18,205.21
  6. Step 6: Final answer
    x = 16,896.88

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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.