Home / 21,222.05-31,817.82-9,971.04

Finding the Fourth Proportional to 21,222.05, 31,817.82 and 9,971.04

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Solution

The fourth proportional to 21,222.05, 31,817.82 and 9,971.04 is: 14,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.05 : 31,817.82 = 9,971.04 : x
  2. Step 2: Convert to fraction form
    21,222.05/31,817.82 = 9,971.04/x
  3. Step 3: Cross multiply
    21,222.05x = 31,817.82 × 9,971.04
  4. Step 4: Simplify right side
    21,222.05x = 317,256,755.93
  5. Step 5: Solve for x
    x = 317,256,755.93/21,222.05
  6. Step 6: Final answer
    x = 14,949.40

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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.