Home / 12,490.25-18,735.38-3,256.25

Finding the Fourth Proportional to 12,490.25, 18,735.38 and 3,256.25

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Solution

The fourth proportional to 12,490.25, 18,735.38 and 3,256.25 is: 4,884.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.25 : 18,735.38 = 3,256.25 : x
  2. Step 2: Convert to fraction form
    12,490.25/18,735.38 = 3,256.25/x
  3. Step 3: Cross multiply
    12,490.25x = 18,735.38 × 3,256.25
  4. Step 4: Simplify right side
    12,490.25x = 61,007,081.13
  5. Step 5: Solve for x
    x = 61,007,081.13/12,490.25
  6. Step 6: Final answer
    x = 4,884.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.