Home / 15,144.56-20,896.30-8,855.72

Finding the Fourth Proportional to 15,144.56, 20,896.30 and 8,855.72

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Solution

The fourth proportional to 15,144.56, 20,896.30 and 8,855.72 is: 12,219.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,144.56 : 20,896.30 = 8,855.72 : x
  2. Step 2: Convert to fraction form
    15,144.56/20,896.30 = 8,855.72/x
  3. Step 3: Cross multiply
    15,144.56x = 20,896.30 × 8,855.72
  4. Step 4: Simplify right side
    15,144.56x = 185,051,781.84
  5. Step 5: Solve for x
    x = 185,051,781.84/15,144.56
  6. Step 6: Final answer
    x = 12,219.03

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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.