Home / 30,144.78-41,620.41-18,831.51

Finding the Fourth Proportional to 30,144.78, 41,620.41 and 18,831.51

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Solution

The fourth proportional to 30,144.78, 41,620.41 and 18,831.51 is: 26,000.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,144.78 : 41,620.41 = 18,831.51 : x
  2. Step 2: Convert to fraction form
    30,144.78/41,620.41 = 18,831.51/x
  3. Step 3: Cross multiply
    30,144.78x = 41,620.41 × 18,831.51
  4. Step 4: Simplify right side
    30,144.78x = 783,775,167.12
  5. Step 5: Solve for x
    x = 783,775,167.12/30,144.78
  6. Step 6: Final answer
    x = 26,000.36

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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.