Home / 18,930.24-26,128.68-10,971.48

Finding the Fourth Proportional to 18,930.24, 26,128.68 and 10,971.48

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Solution

The fourth proportional to 18,930.24, 26,128.68 and 10,971.48 is: 15,143.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.24 : 26,128.68 = 10,971.48 : x
  2. Step 2: Convert to fraction form
    18,930.24/26,128.68 = 10,971.48/x
  3. Step 3: Cross multiply
    18,930.24x = 26,128.68 × 10,971.48
  4. Step 4: Simplify right side
    18,930.24x = 286,670,290.05
  5. Step 5: Solve for x
    x = 286,670,290.05/18,930.24
  6. Step 6: Final answer
    x = 15,143.51

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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.