Home / 19,811.25-27,340.74-11,427.75

Finding the Fourth Proportional to 19,811.25, 27,340.74 and 11,427.75

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Solution

The fourth proportional to 19,811.25, 27,340.74 and 11,427.75 is: 15,771.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.25 : 27,340.74 = 11,427.75 : x
  2. Step 2: Convert to fraction form
    19,811.25/27,340.74 = 11,427.75/x
  3. Step 3: Cross multiply
    19,811.25x = 27,340.74 × 11,427.75
  4. Step 4: Simplify right side
    19,811.25x = 312,443,141.54
  5. Step 5: Solve for x
    x = 312,443,141.54/19,811.25
  6. Step 6: Final answer
    x = 15,771.00

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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.