Home / 31,072.14-42,895.44-21,053.52

Finding the Fourth Proportional to 31,072.14, 42,895.44 and 21,053.52

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Solution

The fourth proportional to 31,072.14, 42,895.44 and 21,053.52 is: 29,064.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,072.14 : 42,895.44 = 21,053.52 : x
  2. Step 2: Convert to fraction form
    31,072.14/42,895.44 = 21,053.52/x
  3. Step 3: Cross multiply
    31,072.14x = 42,895.44 × 21,053.52
  4. Step 4: Simplify right side
    31,072.14x = 903,100,003.95
  5. Step 5: Solve for x
    x = 903,100,003.95/31,072.14
  6. Step 6: Final answer
    x = 29,064.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.