Home / 15,546.87-21,455.01-8,832.78

Finding the Fourth Proportional to 15,546.87, 21,455.01 and 8,832.78

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Solution

The fourth proportional to 15,546.87, 21,455.01 and 8,832.78 is: 12,189.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,546.87 : 21,455.01 = 8,832.78 : x
  2. Step 2: Convert to fraction form
    15,546.87/21,455.01 = 8,832.78/x
  3. Step 3: Cross multiply
    15,546.87x = 21,455.01 × 8,832.78
  4. Step 4: Simplify right side
    15,546.87x = 189,507,383.23
  5. Step 5: Solve for x
    x = 189,507,383.23/15,546.87
  6. Step 6: Final answer
    x = 12,189.42

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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.