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Finding the Fourth Proportional to 13,671.06, 18,866.06 and 7,383.43

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Solution

The fourth proportional to 13,671.06, 18,866.06 and 7,383.43 is: 10,189.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.06 : 18,866.06 = 7,383.43 : x
  2. Step 2: Convert to fraction form
    13,671.06/18,866.06 = 7,383.43/x
  3. Step 3: Cross multiply
    13,671.06x = 18,866.06 × 7,383.43
  4. Step 4: Simplify right side
    13,671.06x = 139,296,214.93
  5. Step 5: Solve for x
    x = 139,296,214.93/13,671.06
  6. Step 6: Final answer
    x = 10,189.13

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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.