Home / 12,431.07-18,647.01-4,111.56

Finding the Fourth Proportional to 12,431.07, 18,647.01 and 4,111.56

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Solution

The fourth proportional to 12,431.07, 18,647.01 and 4,111.56 is: 6,167.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.07 : 18,647.01 = 4,111.56 : x
  2. Step 2: Convert to fraction form
    12,431.07/18,647.01 = 4,111.56/x
  3. Step 3: Cross multiply
    12,431.07x = 18,647.01 × 4,111.56
  4. Step 4: Simplify right side
    12,431.07x = 76,668,300.44
  5. Step 5: Solve for x
    x = 76,668,300.44/12,431.07
  6. Step 6: Final answer
    x = 6,167.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.