Home / 18,579.16-25,610.88-11,395.78

Finding the Fourth Proportional to 18,579.16, 25,610.88 and 11,395.78

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Solution

The fourth proportional to 18,579.16, 25,610.88 and 11,395.78 is: 15,708.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.16 : 25,610.88 = 11,395.78 : x
  2. Step 2: Convert to fraction form
    18,579.16/25,610.88 = 11,395.78/x
  3. Step 3: Cross multiply
    18,579.16x = 25,610.88 × 11,395.78
  4. Step 4: Simplify right side
    18,579.16x = 291,855,954.09
  5. Step 5: Solve for x
    x = 291,855,954.09/18,579.16
  6. Step 6: Final answer
    x = 15,708.78

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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.