Home / 21,395.21-32,079.14-8,923.84

Finding the Fourth Proportional to 21,395.21, 32,079.14 and 8,923.84

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Solution

The fourth proportional to 21,395.21, 32,079.14 and 8,923.84 is: 13,380.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,395.21 : 32,079.14 = 8,923.84 : x
  2. Step 2: Convert to fraction form
    21,395.21/32,079.14 = 8,923.84/x
  3. Step 3: Cross multiply
    21,395.21x = 32,079.14 × 8,923.84
  4. Step 4: Simplify right side
    21,395.21x = 286,269,021.34
  5. Step 5: Solve for x
    x = 286,269,021.34/21,395.21
  6. Step 6: Final answer
    x = 13,380.06

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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.