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Finding the Fourth Proportional to 13,365.51, 18,443.64 and 7,396.83

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Solution

The fourth proportional to 13,365.51, 18,443.64 and 7,396.83 is: 10,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,365.51 : 18,443.64 = 7,396.83 : x
  2. Step 2: Convert to fraction form
    13,365.51/18,443.64 = 7,396.83/x
  3. Step 3: Cross multiply
    13,365.51x = 18,443.64 × 7,396.83
  4. Step 4: Simplify right side
    13,365.51x = 136,424,469.66
  5. Step 5: Solve for x
    x = 136,424,469.66/13,365.51
  6. Step 6: Final answer
    x = 10,207.20

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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.