Home / 20,090.23-30,137.67-7,619.57

Finding the Fourth Proportional to 20,090.23, 30,137.67 and 7,619.57

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Solution

The fourth proportional to 20,090.23, 30,137.67 and 7,619.57 is: 11,430.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.23 : 30,137.67 = 7,619.57 : x
  2. Step 2: Convert to fraction form
    20,090.23/30,137.67 = 7,619.57/x
  3. Step 3: Cross multiply
    20,090.23x = 30,137.67 × 7,619.57
  4. Step 4: Simplify right side
    20,090.23x = 229,636,048.53
  5. Step 5: Solve for x
    x = 229,636,048.53/20,090.23
  6. Step 6: Final answer
    x = 11,430.24

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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.