Home / 19,725.05-27,221.25-11,228.45

Finding the Fourth Proportional to 19,725.05, 27,221.25 and 11,228.45

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Solution

The fourth proportional to 19,725.05, 27,221.25 and 11,228.45 is: 15,495.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,725.05 : 27,221.25 = 11,228.45 : x
  2. Step 2: Convert to fraction form
    19,725.05/27,221.25 = 11,228.45/x
  3. Step 3: Cross multiply
    19,725.05x = 27,221.25 × 11,228.45
  4. Step 4: Simplify right side
    19,725.05x = 305,652,444.56
  5. Step 5: Solve for x
    x = 305,652,444.56/19,725.05
  6. Step 6: Final answer
    x = 15,495.65

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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.