Home / 14,141.79-21,212.73-4,781.89

Finding the Fourth Proportional to 14,141.79, 21,212.73 and 4,781.89

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Solution

The fourth proportional to 14,141.79, 21,212.73 and 4,781.89 is: 7,172.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,141.79 : 21,212.73 = 4,781.89 : x
  2. Step 2: Convert to fraction form
    14,141.79/21,212.73 = 4,781.89/x
  3. Step 3: Cross multiply
    14,141.79x = 21,212.73 × 4,781.89
  4. Step 4: Simplify right side
    14,141.79x = 101,436,941.46
  5. Step 5: Solve for x
    x = 101,436,941.46/14,141.79
  6. Step 6: Final answer
    x = 7,172.85

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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.