Home / 15,941.86-21,997.62-8,866.92

Finding the Fourth Proportional to 15,941.86, 21,997.62 and 8,866.92

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Solution

The fourth proportional to 15,941.86, 21,997.62 and 8,866.92 is: 12,235.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,941.86 : 21,997.62 = 8,866.92 : x
  2. Step 2: Convert to fraction form
    15,941.86/21,997.62 = 8,866.92/x
  3. Step 3: Cross multiply
    15,941.86x = 21,997.62 × 8,866.92
  4. Step 4: Simplify right side
    15,941.86x = 195,051,136.73
  5. Step 5: Solve for x
    x = 195,051,136.73/15,941.86
  6. Step 6: Final answer
    x = 12,235.16

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Double scale
Find fourth proportional to 15,942.86, 21,999 and 8,867.92
Similar ratio
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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.