Home / 13,929.75-20,898-8,010.42

Finding the Fourth Proportional to 13,929.75, 20,898 and 8,010.42

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Solution

The fourth proportional to 13,929.75, 20,898 and 8,010.42 is: 12,017.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.75 : 20,898 = 8,010.42 : x
  2. Step 2: Convert to fraction form
    13,929.75/20,898 = 8,010.42/x
  3. Step 3: Cross multiply
    13,929.75x = 20,898 × 8,010.42
  4. Step 4: Simplify right side
    13,929.75x = 167,401,737.57
  5. Step 5: Solve for x
    x = 167,401,737.57/13,929.75
  6. Step 6: Final answer
    x = 12,017.57

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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.