Home / 30,280.70-41,751.61-20,725.19

Finding the Fourth Proportional to 30,280.70, 41,751.61 and 20,725.19

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Solution

The fourth proportional to 30,280.70, 41,751.61 and 20,725.19 is: 28,576.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,280.70 : 41,751.61 = 20,725.19 : x
  2. Step 2: Convert to fraction form
    30,280.70/41,751.61 = 20,725.19/x
  3. Step 3: Cross multiply
    30,280.70x = 41,751.61 × 20,725.19
  4. Step 4: Simplify right side
    30,280.70x = 865,309,789.48
  5. Step 5: Solve for x
    x = 865,309,789.48/30,280.70
  6. Step 6: Final answer
    x = 28,576.29

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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.