Home / 21,310.63-31,960.80-6,519.67

Finding the Fourth Proportional to 21,310.63, 31,960.80 and 6,519.67

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Solution

The fourth proportional to 21,310.63, 31,960.80 and 6,519.67 is: 9,777.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.63 : 31,960.80 = 6,519.67 : x
  2. Step 2: Convert to fraction form
    21,310.63/31,960.80 = 6,519.67/x
  3. Step 3: Cross multiply
    21,310.63x = 31,960.80 × 6,519.67
  4. Step 4: Simplify right side
    21,310.63x = 208,373,868.94
  5. Step 5: Solve for x
    x = 208,373,868.94/21,310.63
  6. Step 6: Final answer
    x = 9,777.93

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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.