Home / 28,665.21-43,005.78-12,021.33

Finding the Fourth Proportional to 28,665.21, 43,005.78 and 12,021.33

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Solution

The fourth proportional to 28,665.21, 43,005.78 and 12,021.33 is: 18,035.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,665.21 : 43,005.78 = 12,021.33 : x
  2. Step 2: Convert to fraction form
    28,665.21/43,005.78 = 12,021.33/x
  3. Step 3: Cross multiply
    28,665.21x = 43,005.78 × 12,021.33
  4. Step 4: Simplify right side
    28,665.21x = 516,986,673.29
  5. Step 5: Solve for x
    x = 516,986,673.29/28,665.21
  6. Step 6: Final answer
    x = 18,035.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.