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Finding the Fourth Proportional to 21,997.99, 32,988.94 and 7,954.65

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Solution

The fourth proportional to 21,997.99, 32,988.94 and 7,954.65 is: 11,929.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,997.99 : 32,988.94 = 7,954.65 : x
  2. Step 2: Convert to fraction form
    21,997.99/32,988.94 = 7,954.65/x
  3. Step 3: Cross multiply
    21,997.99x = 32,988.94 × 7,954.65
  4. Step 4: Simplify right side
    21,997.99x = 262,415,451.68
  5. Step 5: Solve for x
    x = 262,415,451.68/21,997.99
  6. Step 6: Final answer
    x = 11,929.06

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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.