Home / 15,942.23-21,999.34-8,770.92

Finding the Fourth Proportional to 15,942.23, 21,999.34 and 8,770.92

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Solution

The fourth proportional to 15,942.23, 21,999.34 and 8,770.92 is: 12,103.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,942.23 : 21,999.34 = 8,770.92 : x
  2. Step 2: Convert to fraction form
    15,942.23/21,999.34 = 8,770.92/x
  3. Step 3: Cross multiply
    15,942.23x = 21,999.34 × 8,770.92
  4. Step 4: Simplify right side
    15,942.23x = 192,954,379.66
  5. Step 5: Solve for x
    x = 192,954,379.66/15,942.23
  6. Step 6: Final answer
    x = 12,103.35

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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.