Home / 11,811.98-16,307.32-7,838.48

Finding the Fourth Proportional to 11,811.98, 16,307.32 and 7,838.48

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Solution

The fourth proportional to 11,811.98, 16,307.32 and 7,838.48 is: 10,821.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.98 : 16,307.32 = 7,838.48 : x
  2. Step 2: Convert to fraction form
    11,811.98/16,307.32 = 7,838.48/x
  3. Step 3: Cross multiply
    11,811.98x = 16,307.32 × 7,838.48
  4. Step 4: Simplify right side
    11,811.98x = 127,824,601.67
  5. Step 5: Solve for x
    x = 127,824,601.67/11,811.98
  6. Step 6: Final answer
    x = 10,821.61

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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.