Home / 20,769.64-31,170.85-7,625.77

Finding the Fourth Proportional to 20,769.64, 31,170.85 and 7,625.77

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Solution

The fourth proportional to 20,769.64, 31,170.85 and 7,625.77 is: 11,444.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.64 : 31,170.85 = 7,625.77 : x
  2. Step 2: Convert to fraction form
    20,769.64/31,170.85 = 7,625.77/x
  3. Step 3: Cross multiply
    20,769.64x = 31,170.85 × 7,625.77
  4. Step 4: Simplify right side
    20,769.64x = 237,701,635.81
  5. Step 5: Solve for x
    x = 237,701,635.81/20,769.64
  6. Step 6: Final answer
    x = 11,444.67

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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.