Home / 18,579.78-25,640.04-10,196.28

Finding the Fourth Proportional to 18,579.78, 25,640.04 and 10,196.28

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Solution

The fourth proportional to 18,579.78, 25,640.04 and 10,196.28 is: 14,070.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.78 : 25,640.04 = 10,196.28 : x
  2. Step 2: Convert to fraction form
    18,579.78/25,640.04 = 10,196.28/x
  3. Step 3: Cross multiply
    18,579.78x = 25,640.04 × 10,196.28
  4. Step 4: Simplify right side
    18,579.78x = 261,433,027.05
  5. Step 5: Solve for x
    x = 261,433,027.05/18,579.78
  6. Step 6: Final answer
    x = 14,070.84

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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.