Home / 13,048.01-18,131.16-12,912.54

Finding the Fourth Proportional to 13,048.01, 18,131.16 and 12,912.54

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Solution

The fourth proportional to 13,048.01, 18,131.16 and 12,912.54 is: 17,942.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,048.01 : 18,131.16 = 12,912.54 : x
  2. Step 2: Convert to fraction form
    13,048.01/18,131.16 = 12,912.54/x
  3. Step 3: Cross multiply
    13,048.01x = 18,131.16 × 12,912.54
  4. Step 4: Simplify right side
    13,048.01x = 234,119,328.75
  5. Step 5: Solve for x
    x = 234,119,328.75/13,048.01
  6. Step 6: Final answer
    x = 17,942.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.