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Finding the Fourth Proportional to 32,611.48, 45,040.80 and 21,982.84

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Solution

The fourth proportional to 32,611.48, 45,040.80 and 21,982.84 is: 30,361.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,611.48 : 45,040.80 = 21,982.84 : x
  2. Step 2: Convert to fraction form
    32,611.48/45,040.80 = 21,982.84/x
  3. Step 3: Cross multiply
    32,611.48x = 45,040.80 × 21,982.84
  4. Step 4: Simplify right side
    32,611.48x = 990,124,699.87
  5. Step 5: Solve for x
    x = 990,124,699.87/32,611.48
  6. Step 6: Final answer
    x = 30,361.23

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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.