Home / 38,856.09-53,621.31-21,860.34

Finding the Fourth Proportional to 38,856.09, 53,621.31 and 21,860.34

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Solution

The fourth proportional to 38,856.09, 53,621.31 and 21,860.34 is: 30,167.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,856.09 : 53,621.31 = 21,860.34 : x
  2. Step 2: Convert to fraction form
    38,856.09/53,621.31 = 21,860.34/x
  3. Step 3: Cross multiply
    38,856.09x = 53,621.31 × 21,860.34
  4. Step 4: Simplify right side
    38,856.09x = 1,172,180,067.85
  5. Step 5: Solve for x
    x = 1,172,180,067.85/38,856.09
  6. Step 6: Final answer
    x = 30,167.22

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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.