Home / 20,237.70-30,370.23-7,090.20

Finding the Fourth Proportional to 20,237.70, 30,370.23 and 7,090.20

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Solution

The fourth proportional to 20,237.70, 30,370.23 and 7,090.20 is: 10,640.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,237.70 : 30,370.23 = 7,090.20 : x
  2. Step 2: Convert to fraction form
    20,237.70/30,370.23 = 7,090.20/x
  3. Step 3: Cross multiply
    20,237.70x = 30,370.23 × 7,090.20
  4. Step 4: Simplify right side
    20,237.70x = 215,331,004.75
  5. Step 5: Solve for x
    x = 215,331,004.75/20,237.70
  6. Step 6: Final answer
    x = 10,640.09

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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.