Home / 21,309.92-31,968.46-6,515.37

Finding the Fourth Proportional to 21,309.92, 31,968.46 and 6,515.37

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Solution

The fourth proportional to 21,309.92, 31,968.46 and 6,515.37 is: 9,774.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.92 : 31,968.46 = 6,515.37 : x
  2. Step 2: Convert to fraction form
    21,309.92/31,968.46 = 6,515.37/x
  3. Step 3: Cross multiply
    21,309.92x = 31,968.46 × 6,515.37
  4. Step 4: Simplify right side
    21,309.92x = 208,286,312.65
  5. Step 5: Solve for x
    x = 208,286,312.65/21,309.92
  6. Step 6: Final answer
    x = 9,774.15

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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.