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Finding the Fourth Proportional to 38,793.82, 58,208.01 and 20,321.50

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Solution

The fourth proportional to 38,793.82, 58,208.01 and 20,321.50 is: 30,491.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,793.82 : 58,208.01 = 20,321.50 : x
  2. Step 2: Convert to fraction form
    38,793.82/58,208.01 = 20,321.50/x
  3. Step 3: Cross multiply
    38,793.82x = 58,208.01 × 20,321.50
  4. Step 4: Simplify right side
    38,793.82x = 1,182,874,075.22
  5. Step 5: Solve for x
    x = 1,182,874,075.22/38,793.82
  6. Step 6: Final answer
    x = 30,491.30

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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.