Home / 12,746.12-19,119.16-8,739.56

Finding the Fourth Proportional to 12,746.12, 19,119.16 and 8,739.56

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Solution

The fourth proportional to 12,746.12, 19,119.16 and 8,739.56 is: 13,109.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.12 : 19,119.16 = 8,739.56 : x
  2. Step 2: Convert to fraction form
    12,746.12/19,119.16 = 8,739.56/x
  3. Step 3: Cross multiply
    12,746.12x = 19,119.16 × 8,739.56
  4. Step 4: Simplify right side
    12,746.12x = 167,093,045.97
  5. Step 5: Solve for x
    x = 167,093,045.97/12,746.12
  6. Step 6: Final answer
    x = 13,109.33

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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.