Home / 20,945.59-31,408.51-7,609.18

Finding the Fourth Proportional to 20,945.59, 31,408.51 and 7,609.18

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Solution

The fourth proportional to 20,945.59, 31,408.51 and 7,609.18 is: 11,410.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.59 : 31,408.51 = 7,609.18 : x
  2. Step 2: Convert to fraction form
    20,945.59/31,408.51 = 7,609.18/x
  3. Step 3: Cross multiply
    20,945.59x = 31,408.51 × 7,609.18
  4. Step 4: Simplify right side
    20,945.59x = 238,992,893.40
  5. Step 5: Solve for x
    x = 238,992,893.40/20,945.59
  6. Step 6: Final answer
    x = 11,410.18

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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.