Home / 21,333.05-31,999.82-6,542.09

Finding the Fourth Proportional to 21,333.05, 31,999.82 and 6,542.09

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Solution

The fourth proportional to 21,333.05, 31,999.82 and 6,542.09 is: 9,813.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,333.05 : 31,999.82 = 6,542.09 : x
  2. Step 2: Convert to fraction form
    21,333.05/31,999.82 = 6,542.09/x
  3. Step 3: Cross multiply
    21,333.05x = 31,999.82 × 6,542.09
  4. Step 4: Simplify right side
    21,333.05x = 209,345,669.71
  5. Step 5: Solve for x
    x = 209,345,669.71/21,333.05
  6. Step 6: Final answer
    x = 9,813.21

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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.