Home / 21,346.79-31,998.30-8,874.05

Finding the Fourth Proportional to 21,346.79, 31,998.30 and 8,874.05

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Solution

The fourth proportional to 21,346.79, 31,998.30 and 8,874.05 is: 13,301.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.79 : 31,998.30 = 8,874.05 : x
  2. Step 2: Convert to fraction form
    21,346.79/31,998.30 = 8,874.05/x
  3. Step 3: Cross multiply
    21,346.79x = 31,998.30 × 8,874.05
  4. Step 4: Simplify right side
    21,346.79x = 283,954,354.12
  5. Step 5: Solve for x
    x = 283,954,354.12/21,346.79
  6. Step 6: Final answer
    x = 13,301.97

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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.