Home / 38,853.08-53,617.18-21,857.34

Finding the Fourth Proportional to 38,853.08, 53,617.18 and 21,857.34

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Solution

The fourth proportional to 38,853.08, 53,617.18 and 21,857.34 is: 30,163.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,853.08 : 53,617.18 = 21,857.34 : x
  2. Step 2: Convert to fraction form
    38,853.08/53,617.18 = 21,857.34/x
  3. Step 3: Cross multiply
    38,853.08x = 53,617.18 × 21,857.34
  4. Step 4: Simplify right side
    38,853.08x = 1,171,928,933.10
  5. Step 5: Solve for x
    x = 1,171,928,933.10/38,853.08
  6. Step 6: Final answer
    x = 30,163.09

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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.