Home / 14,257.85-21,396.02-7,688.61

Finding the Fourth Proportional to 14,257.85, 21,396.02 and 7,688.61

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Solution

The fourth proportional to 14,257.85, 21,396.02 and 7,688.61 is: 11,537.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,257.85 : 21,396.02 = 7,688.61 : x
  2. Step 2: Convert to fraction form
    14,257.85/21,396.02 = 7,688.61/x
  3. Step 3: Cross multiply
    14,257.85x = 21,396.02 × 7,688.61
  4. Step 4: Simplify right side
    14,257.85x = 164,505,614.89
  5. Step 5: Solve for x
    x = 164,505,614.89/14,257.85
  6. Step 6: Final answer
    x = 11,537.90

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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.