Home / 20,958.03-31,430.30-6,914.79

Finding the Fourth Proportional to 20,958.03, 31,430.30 and 6,914.79

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Solution

The fourth proportional to 20,958.03, 31,430.30 and 6,914.79 is: 10,369.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.03 : 31,430.30 = 6,914.79 : x
  2. Step 2: Convert to fraction form
    20,958.03/31,430.30 = 6,914.79/x
  3. Step 3: Cross multiply
    20,958.03x = 31,430.30 × 6,914.79
  4. Step 4: Simplify right side
    20,958.03x = 217,333,889.56
  5. Step 5: Solve for x
    x = 217,333,889.56/20,958.03
  6. Step 6: Final answer
    x = 10,369.96

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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.