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Finding the Fourth Proportional to 21,950.73, 30,282.01 and 13,987.98

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Solution

The fourth proportional to 21,950.73, 30,282.01 and 13,987.98 is: 19,297.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,950.73 : 30,282.01 = 13,987.98 : x
  2. Step 2: Convert to fraction form
    21,950.73/30,282.01 = 13,987.98/x
  3. Step 3: Cross multiply
    21,950.73x = 30,282.01 × 13,987.98
  4. Step 4: Simplify right side
    21,950.73x = 423,584,115.27
  5. Step 5: Solve for x
    x = 423,584,115.27/21,950.73
  6. Step 6: Final answer
    x = 19,297.04

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1.5x scale

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.