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Finding the Fourth Proportional to 28,361.35, 42,542.03 and 7,584.31

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Solution

The fourth proportional to 28,361.35, 42,542.03 and 7,584.31 is: 11,376.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,361.35 : 42,542.03 = 7,584.31 : x
  2. Step 2: Convert to fraction form
    28,361.35/42,542.03 = 7,584.31/x
  3. Step 3: Cross multiply
    28,361.35x = 42,542.03 × 7,584.31
  4. Step 4: Simplify right side
    28,361.35x = 322,651,943.55
  5. Step 5: Solve for x
    x = 322,651,943.55/28,361.35
  6. Step 6: Final answer
    x = 11,376.47

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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.