Home / 20,090.45-30,131.55-7,606.17

Finding the Fourth Proportional to 20,090.45, 30,131.55 and 7,606.17

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Solution

The fourth proportional to 20,090.45, 30,131.55 and 7,606.17 is: 11,407.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.45 : 30,131.55 = 7,606.17 : x
  2. Step 2: Convert to fraction form
    20,090.45/30,131.55 = 7,606.17/x
  3. Step 3: Cross multiply
    20,090.45x = 30,131.55 × 7,606.17
  4. Step 4: Simplify right side
    20,090.45x = 229,185,691.66
  5. Step 5: Solve for x
    x = 229,185,691.66/20,090.45
  6. Step 6: Final answer
    x = 11,407.70

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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.