Home / 18,206.64-25,119.72-11,125.80

Finding the Fourth Proportional to 18,206.64, 25,119.72 and 11,125.80

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Solution

The fourth proportional to 18,206.64, 25,119.72 and 11,125.80 is: 15,350.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,206.64 : 25,119.72 = 11,125.80 : x
  2. Step 2: Convert to fraction form
    18,206.64/25,119.72 = 11,125.80/x
  3. Step 3: Cross multiply
    18,206.64x = 25,119.72 × 11,125.80
  4. Step 4: Simplify right side
    18,206.64x = 279,476,980.78
  5. Step 5: Solve for x
    x = 279,476,980.78/18,206.64
  6. Step 6: Final answer
    x = 15,350.28

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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.