Home / 19,749.77-27,255.11-11,790.50

Finding the Fourth Proportional to 19,749.77, 27,255.11 and 11,790.50

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Solution

The fourth proportional to 19,749.77, 27,255.11 and 11,790.50 is: 16,271.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,749.77 : 27,255.11 = 11,790.50 : x
  2. Step 2: Convert to fraction form
    19,749.77/27,255.11 = 11,790.50/x
  3. Step 3: Cross multiply
    19,749.77x = 27,255.11 × 11,790.50
  4. Step 4: Simplify right side
    19,749.77x = 321,351,383.64
  5. Step 5: Solve for x
    x = 321,351,383.64/19,749.77
  6. Step 6: Final answer
    x = 16,271.15

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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.