Home / 21,489.65-32,215.03-7,635.41

Finding the Fourth Proportional to 21,489.65, 32,215.03 and 7,635.41

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Solution

The fourth proportional to 21,489.65, 32,215.03 and 7,635.41 is: 11,446.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.65 : 32,215.03 = 7,635.41 : x
  2. Step 2: Convert to fraction form
    21,489.65/32,215.03 = 7,635.41/x
  3. Step 3: Cross multiply
    21,489.65x = 32,215.03 × 7,635.41
  4. Step 4: Simplify right side
    21,489.65x = 245,974,962.21
  5. Step 5: Solve for x
    x = 245,974,962.21/21,489.65
  6. Step 6: Final answer
    x = 11,446.21

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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.