Home / 28,006.33-38,622.77-20,440.68

Finding the Fourth Proportional to 28,006.33, 38,622.77 and 20,440.68

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Solution

The fourth proportional to 28,006.33, 38,622.77 and 20,440.68 is: 28,189.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.33 : 38,622.77 = 20,440.68 : x
  2. Step 2: Convert to fraction form
    28,006.33/38,622.77 = 20,440.68/x
  3. Step 3: Cross multiply
    28,006.33x = 38,622.77 × 20,440.68
  4. Step 4: Simplify right side
    28,006.33x = 789,475,489.17
  5. Step 5: Solve for x
    x = 789,475,489.17/28,006.33
  6. Step 6: Final answer
    x = 28,189.18

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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.