Home / 21,302.70-31,968.45-11,942.70

Finding the Fourth Proportional to 21,302.70, 31,968.45 and 11,942.70

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Solution

The fourth proportional to 21,302.70, 31,968.45 and 11,942.70 is: 17,922.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.70 : 31,968.45 = 11,942.70 : x
  2. Step 2: Convert to fraction form
    21,302.70/31,968.45 = 11,942.70/x
  3. Step 3: Cross multiply
    21,302.70x = 31,968.45 × 11,942.70
  4. Step 4: Simplify right side
    21,302.70x = 381,789,607.82
  5. Step 5: Solve for x
    x = 381,789,607.82/21,302.70
  6. Step 6: Final answer
    x = 17,922.12

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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.