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Finding the Fourth Proportional to 11,605.62, 15,998.91 and 7,619.76

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Solution

The fourth proportional to 11,605.62, 15,998.91 and 7,619.76 is: 10,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,605.62 : 15,998.91 = 7,619.76 : x
  2. Step 2: Convert to fraction form
    11,605.62/15,998.91 = 7,619.76/x
  3. Step 3: Cross multiply
    11,605.62x = 15,998.91 × 7,619.76
  4. Step 4: Simplify right side
    11,605.62x = 121,907,854.46
  5. Step 5: Solve for x
    x = 121,907,854.46/11,605.62
  6. Step 6: Final answer
    x = 10,504.21

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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.