Home / 19,905.76-27,469.35-10,953.28

Finding the Fourth Proportional to 19,905.76, 27,469.35 and 10,953.28

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Solution

The fourth proportional to 19,905.76, 27,469.35 and 10,953.28 is: 15,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.76 : 27,469.35 = 10,953.28 : x
  2. Step 2: Convert to fraction form
    19,905.76/27,469.35 = 10,953.28/x
  3. Step 3: Cross multiply
    19,905.76x = 27,469.35 × 10,953.28
  4. Step 4: Simplify right side
    19,905.76x = 300,879,481.97
  5. Step 5: Solve for x
    x = 300,879,481.97/19,905.76
  6. Step 6: Final answer
    x = 15,115.20

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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.