Home / 15,450.37-21,321.55-8,376.79

Finding the Fourth Proportional to 15,450.37, 21,321.55 and 8,376.79

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Solution

The fourth proportional to 15,450.37, 21,321.55 and 8,376.79 is: 11,560.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.37 : 21,321.55 = 8,376.79 : x
  2. Step 2: Convert to fraction form
    15,450.37/21,321.55 = 8,376.79/x
  3. Step 3: Cross multiply
    15,450.37x = 21,321.55 × 8,376.79
  4. Step 4: Simplify right side
    15,450.37x = 178,606,146.82
  5. Step 5: Solve for x
    x = 178,606,146.82/15,450.37
  6. Step 6: Final answer
    x = 11,560.00

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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.