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Finding the Fourth Proportional to 13,371.55, 18,453.77 and 7,403.77

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Solution

The fourth proportional to 13,371.55, 18,453.77 and 7,403.77 is: 10,217.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.55 : 18,453.77 = 7,403.77 : x
  2. Step 2: Convert to fraction form
    13,371.55/18,453.77 = 7,403.77/x
  3. Step 3: Cross multiply
    13,371.55x = 18,453.77 × 7,403.77
  4. Step 4: Simplify right side
    13,371.55x = 136,627,524.17
  5. Step 5: Solve for x
    x = 136,627,524.17/13,371.55
  6. Step 6: Final answer
    x = 10,217.78

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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.