Home / 15,450.31-21,321.21-8,735.77

Finding the Fourth Proportional to 15,450.31, 21,321.21 and 8,735.77

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Solution

The fourth proportional to 15,450.31, 21,321.21 and 8,735.77 is: 12,055.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.31 : 21,321.21 = 8,735.77 : x
  2. Step 2: Convert to fraction form
    15,450.31/21,321.21 = 8,735.77/x
  3. Step 3: Cross multiply
    15,450.31x = 21,321.21 × 8,735.77
  4. Step 4: Simplify right side
    15,450.31x = 186,257,186.68
  5. Step 5: Solve for x
    x = 186,257,186.68/15,450.31
  6. Step 6: Final answer
    x = 12,055.24

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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.