Home / 19,665.60-27,138.98-11,166.37

Finding the Fourth Proportional to 19,665.60, 27,138.98 and 11,166.37

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Solution

The fourth proportional to 19,665.60, 27,138.98 and 11,166.37 is: 15,409.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,665.60 : 27,138.98 = 11,166.37 : x
  2. Step 2: Convert to fraction form
    19,665.60/27,138.98 = 11,166.37/x
  3. Step 3: Cross multiply
    19,665.60x = 27,138.98 × 11,166.37
  4. Step 4: Simplify right side
    19,665.60x = 303,043,756.41
  5. Step 5: Solve for x
    x = 303,043,756.41/19,665.60
  6. Step 6: Final answer
    x = 15,409.84

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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.