Home / 28,759.55-43,135.65-21,374.78

Finding the Fourth Proportional to 28,759.55, 43,135.65 and 21,374.78

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Solution

The fourth proportional to 28,759.55, 43,135.65 and 21,374.78 is: 32,059.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,759.55 : 43,135.65 = 21,374.78 : x
  2. Step 2: Convert to fraction form
    28,759.55/43,135.65 = 21,374.78/x
  3. Step 3: Cross multiply
    28,759.55x = 43,135.65 × 21,374.78
  4. Step 4: Simplify right side
    28,759.55x = 922,015,028.91
  5. Step 5: Solve for x
    x = 922,015,028.91/28,759.55
  6. Step 6: Final answer
    x = 32,059.44

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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.