Home / 19,730.78-27,224.00-11,771.45

Finding the Fourth Proportional to 19,730.78, 27,224.00 and 11,771.45

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Solution

The fourth proportional to 19,730.78, 27,224.00 and 11,771.45 is: 16,241.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,730.78 : 27,224.00 = 11,771.45 : x
  2. Step 2: Convert to fraction form
    19,730.78/27,224.00 = 11,771.45/x
  3. Step 3: Cross multiply
    19,730.78x = 27,224.00 × 11,771.45
  4. Step 4: Simplify right side
    19,730.78x = 320,465,759.82
  5. Step 5: Solve for x
    x = 320,465,759.82/19,730.78
  6. Step 6: Final answer
    x = 16,241.92

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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.