Home / 21,028.82-31,521.93-13,637.97

Finding the Fourth Proportional to 21,028.82, 31,521.93 and 13,637.97

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Solution

The fourth proportional to 21,028.82, 31,521.93 and 13,637.97 is: 20,443.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028.82 : 31,521.93 = 13,637.97 : x
  2. Step 2: Convert to fraction form
    21,028.82/31,521.93 = 13,637.97/x
  3. Step 3: Cross multiply
    21,028.82x = 31,521.93 × 13,637.97
  4. Step 4: Simplify right side
    21,028.82x = 429,895,135.68
  5. Step 5: Solve for x
    x = 429,895,135.68/21,028.82
  6. Step 6: Final answer
    x = 20,443.15

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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.