Home / 13,739.27-18,968.31-8,707.77

Finding the Fourth Proportional to 13,739.27, 18,968.31 and 8,707.77

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Solution

The fourth proportional to 13,739.27, 18,968.31 and 8,707.77 is: 12,021.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.27 : 18,968.31 = 8,707.77 : x
  2. Step 2: Convert to fraction form
    13,739.27/18,968.31 = 8,707.77/x
  3. Step 3: Cross multiply
    13,739.27x = 18,968.31 × 8,707.77
  4. Step 4: Simplify right side
    13,739.27x = 165,171,680.77
  5. Step 5: Solve for x
    x = 165,171,680.77/13,739.27
  6. Step 6: Final answer
    x = 12,021.87

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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.