Home / 13,674.08-18,871.92-7,707.22

Finding the Fourth Proportional to 13,674.08, 18,871.92 and 7,707.22

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Solution

The fourth proportional to 13,674.08, 18,871.92 and 7,707.22 is: 10,636.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,674.08 : 18,871.92 = 7,707.22 : x
  2. Step 2: Convert to fraction form
    13,674.08/18,871.92 = 7,707.22/x
  3. Step 3: Cross multiply
    13,674.08x = 18,871.92 × 7,707.22
  4. Step 4: Simplify right side
    13,674.08x = 145,449,992.08
  5. Step 5: Solve for x
    x = 145,449,992.08/13,674.08
  6. Step 6: Final answer
    x = 10,636.91

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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.