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Finding the Fourth Proportional to 11,495.88, 15,863.13 and 7,020.72

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Solution

The fourth proportional to 11,495.88, 15,863.13 and 7,020.72 is: 9,687.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,495.88 : 15,863.13 = 7,020.72 : x
  2. Step 2: Convert to fraction form
    11,495.88/15,863.13 = 7,020.72/x
  3. Step 3: Cross multiply
    11,495.88x = 15,863.13 × 7,020.72
  4. Step 4: Simplify right side
    11,495.88x = 111,370,594.05
  5. Step 5: Solve for x
    x = 111,370,594.05/11,495.88
  6. Step 6: Final answer
    x = 9,687.87

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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.