Home / 21,072.58-31,625.19-7,936.90

Finding the Fourth Proportional to 21,072.58, 31,625.19 and 7,936.90

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Solution

The fourth proportional to 21,072.58, 31,625.19 and 7,936.90 is: 11,911.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.58 : 31,625.19 = 7,936.90 : x
  2. Step 2: Convert to fraction form
    21,072.58/31,625.19 = 7,936.90/x
  3. Step 3: Cross multiply
    21,072.58x = 31,625.19 × 7,936.90
  4. Step 4: Simplify right side
    21,072.58x = 251,005,970.51
  5. Step 5: Solve for x
    x = 251,005,970.51/21,072.58
  6. Step 6: Final answer
    x = 11,911.50

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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.