Home / 20,090.90-30,140.13-8,083.96

Finding the Fourth Proportional to 20,090.90, 30,140.13 and 8,083.96

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Solution

The fourth proportional to 20,090.90, 30,140.13 and 8,083.96 is: 12,127.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.90 : 30,140.13 = 8,083.96 : x
  2. Step 2: Convert to fraction form
    20,090.90/30,140.13 = 8,083.96/x
  3. Step 3: Cross multiply
    20,090.90x = 30,140.13 × 8,083.96
  4. Step 4: Simplify right side
    20,090.90x = 243,651,605.31
  5. Step 5: Solve for x
    x = 243,651,605.31/20,090.90
  6. Step 6: Final answer
    x = 12,127.46

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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.