Home / 21,219.67-31,834.82-14,991.89

Finding the Fourth Proportional to 21,219.67, 31,834.82 and 14,991.89

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Solution

The fourth proportional to 21,219.67, 31,834.82 and 14,991.89 is: 22,491.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.67 : 31,834.82 = 14,991.89 : x
  2. Step 2: Convert to fraction form
    21,219.67/31,834.82 = 14,991.89/x
  3. Step 3: Cross multiply
    21,219.67x = 31,834.82 × 14,991.89
  4. Step 4: Simplify right side
    21,219.67x = 477,263,997.92
  5. Step 5: Solve for x
    x = 477,263,997.92/21,219.67
  6. Step 6: Final answer
    x = 22,491.58

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1.5x scale

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.