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Finding the Fourth Proportional to 29,040.32, 43,524.90 and 20,675

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Solution

The fourth proportional to 29,040.32, 43,524.90 and 20,675 is: 30,987.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,040.32 : 43,524.90 = 20,675 : x
  2. Step 2: Convert to fraction form
    29,040.32/43,524.90 = 20,675/x
  3. Step 3: Cross multiply
    29,040.32x = 43,524.90 × 20,675
  4. Step 4: Simplify right side
    29,040.32x = 899,877,307.50
  5. Step 5: Solve for x
    x = 899,877,307.50/29,040.32
  6. Step 6: Final answer
    x = 30,987.17

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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.