Home / 13,999.32-21,000-4,638.96

Finding the Fourth Proportional to 13,999.32, 21,000 and 4,638.96

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Solution

The fourth proportional to 13,999.32, 21,000 and 4,638.96 is: 6,958.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.32 : 21,000 = 4,638.96 : x
  2. Step 2: Convert to fraction form
    13,999.32/21,000 = 4,638.96/x
  3. Step 3: Cross multiply
    13,999.32x = 21,000 × 4,638.96
  4. Step 4: Simplify right side
    13,999.32x = 97,418,160
  5. Step 5: Solve for x
    x = 97,418,160/13,999.32
  6. Step 6: Final answer
    x = 6,958.78

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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.