Home / 21,040.11-31,553.32-6,996.36

Finding the Fourth Proportional to 21,040.11, 31,553.32 and 6,996.36

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Solution

The fourth proportional to 21,040.11, 31,553.32 and 6,996.36 is: 10,492.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.11 : 31,553.32 = 6,996.36 : x
  2. Step 2: Convert to fraction form
    21,040.11/31,553.32 = 6,996.36/x
  3. Step 3: Cross multiply
    21,040.11x = 31,553.32 × 6,996.36
  4. Step 4: Simplify right side
    21,040.11x = 220,758,342.06
  5. Step 5: Solve for x
    x = 220,758,342.06/21,040.11
  6. Step 6: Final answer
    x = 10,492.26

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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.