Home / 13,157.77-18,169.84-8,450.25

Finding the Fourth Proportional to 13,157.77, 18,169.84 and 8,450.25

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Solution

The fourth proportional to 13,157.77, 18,169.84 and 8,450.25 is: 11,669.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.77 : 18,169.84 = 8,450.25 : x
  2. Step 2: Convert to fraction form
    13,157.77/18,169.84 = 8,450.25/x
  3. Step 3: Cross multiply
    13,157.77x = 18,169.84 × 8,450.25
  4. Step 4: Simplify right side
    13,157.77x = 153,539,699.44
  5. Step 5: Solve for x
    x = 153,539,699.44/13,157.77
  6. Step 6: Final answer
    x = 11,669.13

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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.