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Finding the Fourth Proportional to 11,999.88, 16,555.22 and 7,515.82

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Solution

The fourth proportional to 11,999.88, 16,555.22 and 7,515.82 is: 10,368.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.88 : 16,555.22 = 7,515.82 : x
  2. Step 2: Convert to fraction form
    11,999.88/16,555.22 = 7,515.82/x
  3. Step 3: Cross multiply
    11,999.88x = 16,555.22 × 7,515.82
  4. Step 4: Simplify right side
    11,999.88x = 124,426,064.88
  5. Step 5: Solve for x
    x = 124,426,064.88/11,999.88
  6. Step 6: Final answer
    x = 10,368.94

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Double scale
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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.