Home / 13,751.36-18,969.92-8,707.12

Finding the Fourth Proportional to 13,751.36, 18,969.92 and 8,707.12

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Solution

The fourth proportional to 13,751.36, 18,969.92 and 8,707.12 is: 12,011.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.36 : 18,969.92 = 8,707.12 : x
  2. Step 2: Convert to fraction form
    13,751.36/18,969.92 = 8,707.12/x
  3. Step 3: Cross multiply
    13,751.36x = 18,969.92 × 8,707.12
  4. Step 4: Simplify right side
    13,751.36x = 165,173,369.83
  5. Step 5: Solve for x
    x = 165,173,369.83/13,751.36
  6. Step 6: Final answer
    x = 12,011.42

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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.