Home / 30,147.78-41,624.55-18,834.51

Finding the Fourth Proportional to 30,147.78, 41,624.55 and 18,834.51

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Solution

The fourth proportional to 30,147.78, 41,624.55 and 18,834.51 is: 26,004.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,147.78 : 41,624.55 = 18,834.51 : x
  2. Step 2: Convert to fraction form
    30,147.78/41,624.55 = 18,834.51/x
  3. Step 3: Cross multiply
    30,147.78x = 41,624.55 × 18,834.51
  4. Step 4: Simplify right side
    30,147.78x = 783,978,003.22
  5. Step 5: Solve for x
    x = 783,978,003.22/30,147.78
  6. Step 6: Final answer
    x = 26,004.50

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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.