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Finding the Fourth Proportional to 38,205.58, 57,308.04 and 20,786.08

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Solution

The fourth proportional to 38,205.58, 57,308.04 and 20,786.08 is: 31,178.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,205.58 : 57,308.04 = 20,786.08 : x
  2. Step 2: Convert to fraction form
    38,205.58/57,308.04 = 20,786.08/x
  3. Step 3: Cross multiply
    38,205.58x = 57,308.04 × 20,786.08
  4. Step 4: Simplify right side
    38,205.58x = 1,191,209,504.08
  5. Step 5: Solve for x
    x = 1,191,209,504.08/38,205.58
  6. Step 6: Final answer
    x = 31,178.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.