Home / 20,945.42-31,400.46-9,090.26

Finding the Fourth Proportional to 20,945.42, 31,400.46 and 9,090.26

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Solution

The fourth proportional to 20,945.42, 31,400.46 and 9,090.26 is: 13,627.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.42 : 31,400.46 = 9,090.26 : x
  2. Step 2: Convert to fraction form
    20,945.42/31,400.46 = 9,090.26/x
  3. Step 3: Cross multiply
    20,945.42x = 31,400.46 × 9,090.26
  4. Step 4: Simplify right side
    20,945.42x = 285,438,306.27
  5. Step 5: Solve for x
    x = 285,438,306.27/20,945.42
  6. Step 6: Final answer
    x = 13,627.72

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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.