Home / 13,601.25-18,755.94-12,807.55

Finding the Fourth Proportional to 13,601.25, 18,755.94 and 12,807.55

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Solution

The fourth proportional to 13,601.25, 18,755.94 and 12,807.55 is: 17,661.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601.25 : 18,755.94 = 12,807.55 : x
  2. Step 2: Convert to fraction form
    13,601.25/18,755.94 = 12,807.55/x
  3. Step 3: Cross multiply
    13,601.25x = 18,755.94 × 12,807.55
  4. Step 4: Simplify right side
    13,601.25x = 240,217,639.35
  5. Step 5: Solve for x
    x = 240,217,639.35/13,601.25
  6. Step 6: Final answer
    x = 17,661.44

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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.