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Finding the Fourth Proportional to 21,507.68, 32,263.55 and 8,361.06

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Solution

The fourth proportional to 21,507.68, 32,263.55 and 8,361.06 is: 12,542.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.68 : 32,263.55 = 8,361.06 : x
  2. Step 2: Convert to fraction form
    21,507.68/32,263.55 = 8,361.06/x
  3. Step 3: Cross multiply
    21,507.68x = 32,263.55 × 8,361.06
  4. Step 4: Simplify right side
    21,507.68x = 269,757,435.56
  5. Step 5: Solve for x
    x = 269,757,435.56/21,507.68
  6. Step 6: Final answer
    x = 12,542.38

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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.