Home / 18,148.23-25,047.27-11,078.75

Finding the Fourth Proportional to 18,148.23, 25,047.27 and 11,078.75

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Solution

The fourth proportional to 18,148.23, 25,047.27 and 11,078.75 is: 15,290.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,148.23 : 25,047.27 = 11,078.75 : x
  2. Step 2: Convert to fraction form
    18,148.23/25,047.27 = 11,078.75/x
  3. Step 3: Cross multiply
    18,148.23x = 25,047.27 × 11,078.75
  4. Step 4: Simplify right side
    18,148.23x = 277,492,505.13
  5. Step 5: Solve for x
    x = 277,492,505.13/18,148.23
  6. Step 6: Final answer
    x = 15,290.33

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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.