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Finding the Fourth Proportional to 11,365.60, 15,675.63 and 7,388

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Solution

The fourth proportional to 11,365.60, 15,675.63 and 7,388 is: 10,189.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,365.60 : 15,675.63 = 7,388 : x
  2. Step 2: Convert to fraction form
    11,365.60/15,675.63 = 7,388/x
  3. Step 3: Cross multiply
    11,365.60x = 15,675.63 × 7,388
  4. Step 4: Simplify right side
    11,365.60x = 115,811,554.44
  5. Step 5: Solve for x
    x = 115,811,554.44/11,365.60
  6. Step 6: Final answer
    x = 10,189.66

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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.