Home / 18,788.37-28,181.67-7,692.31

Finding the Fourth Proportional to 18,788.37, 28,181.67 and 7,692.31

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Solution

The fourth proportional to 18,788.37, 28,181.67 and 7,692.31 is: 11,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.37 : 28,181.67 = 7,692.31 : x
  2. Step 2: Convert to fraction form
    18,788.37/28,181.67 = 7,692.31/x
  3. Step 3: Cross multiply
    18,788.37x = 28,181.67 × 7,692.31
  4. Step 4: Simplify right side
    18,788.37x = 216,782,141.96
  5. Step 5: Solve for x
    x = 216,782,141.96/18,788.37
  6. Step 6: Final answer
    x = 11,538.10

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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.