Home / 18,702.82-25,786.54-11,977.39

Finding the Fourth Proportional to 18,702.82, 25,786.54 and 11,977.39

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Solution

The fourth proportional to 18,702.82, 25,786.54 and 11,977.39 is: 16,513.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.82 : 25,786.54 = 11,977.39 : x
  2. Step 2: Convert to fraction form
    18,702.82/25,786.54 = 11,977.39/x
  3. Step 3: Cross multiply
    18,702.82x = 25,786.54 × 11,977.39
  4. Step 4: Simplify right side
    18,702.82x = 308,855,411.81
  5. Step 5: Solve for x
    x = 308,855,411.81/18,702.82
  6. Step 6: Final answer
    x = 16,513.84

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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.