Home / 20,607.60-30,911.42-7,456.89

Finding the Fourth Proportional to 20,607.60, 30,911.42 and 7,456.89

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Solution

The fourth proportional to 20,607.60, 30,911.42 and 7,456.89 is: 11,185.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.60 : 30,911.42 = 7,456.89 : x
  2. Step 2: Convert to fraction form
    20,607.60/30,911.42 = 7,456.89/x
  3. Step 3: Cross multiply
    20,607.60x = 30,911.42 × 7,456.89
  4. Step 4: Simplify right side
    20,607.60x = 230,503,058.68
  5. Step 5: Solve for x
    x = 230,503,058.68/20,607.60
  6. Step 6: Final answer
    x = 11,185.34

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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.