Home / 21,026.18-31,544.60-6,986.28

Finding the Fourth Proportional to 21,026.18, 31,544.60 and 6,986.28

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Solution

The fourth proportional to 21,026.18, 31,544.60 and 6,986.28 is: 10,481.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.18 : 31,544.60 = 6,986.28 : x
  2. Step 2: Convert to fraction form
    21,026.18/31,544.60 = 6,986.28/x
  3. Step 3: Cross multiply
    21,026.18x = 31,544.60 × 6,986.28
  4. Step 4: Simplify right side
    21,026.18x = 220,379,491.45
  5. Step 5: Solve for x
    x = 220,379,491.45/21,026.18
  6. Step 6: Final answer
    x = 10,481.19

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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.