Home / 20,983.16-31,466.78-6,938.98

Finding the Fourth Proportional to 20,983.16, 31,466.78 and 6,938.98

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Solution

The fourth proportional to 20,983.16, 31,466.78 and 6,938.98 is: 10,405.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.16 : 31,466.78 = 6,938.98 : x
  2. Step 2: Convert to fraction form
    20,983.16/31,466.78 = 6,938.98/x
  3. Step 3: Cross multiply
    20,983.16x = 31,466.78 × 6,938.98
  4. Step 4: Simplify right side
    20,983.16x = 218,347,357.08
  5. Step 5: Solve for x
    x = 218,347,357.08/20,983.16
  6. Step 6: Final answer
    x = 10,405.84

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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.