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Finding the Fourth Proportional to 16,639.55, 22,971.02 and 12,854.22

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Solution

The fourth proportional to 16,639.55, 22,971.02 and 12,854.22 is: 17,745.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,639.55 : 22,971.02 = 12,854.22 : x
  2. Step 2: Convert to fraction form
    16,639.55/22,971.02 = 12,854.22/x
  3. Step 3: Cross multiply
    16,639.55x = 22,971.02 × 12,854.22
  4. Step 4: Simplify right side
    16,639.55x = 295,274,544.70
  5. Step 5: Solve for x
    x = 295,274,544.70/16,639.55
  6. Step 6: Final answer
    x = 17,745.34

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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.