Home / 21,281.48-29,369.36-11,850.05

Finding the Fourth Proportional to 21,281.48, 29,369.36 and 11,850.05

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Solution

The fourth proportional to 21,281.48, 29,369.36 and 11,850.05 is: 16,353.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.48 : 29,369.36 = 11,850.05 : x
  2. Step 2: Convert to fraction form
    21,281.48/29,369.36 = 11,850.05/x
  3. Step 3: Cross multiply
    21,281.48x = 29,369.36 × 11,850.05
  4. Step 4: Simplify right side
    21,281.48x = 348,028,288.99
  5. Step 5: Solve for x
    x = 348,028,288.99/21,281.48
  6. Step 6: Final answer
    x = 16,353.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.