Home / 28,309.73-42,404.13-21,571.34

Finding the Fourth Proportional to 28,309.73, 42,404.13 and 21,571.34

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Solution

The fourth proportional to 28,309.73, 42,404.13 and 21,571.34 is: 32,310.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.73 : 42,404.13 = 21,571.34 : x
  2. Step 2: Convert to fraction form
    28,309.73/42,404.13 = 21,571.34/x
  3. Step 3: Cross multiply
    28,309.73x = 42,404.13 × 21,571.34
  4. Step 4: Simplify right side
    28,309.73x = 914,713,693.61
  5. Step 5: Solve for x
    x = 914,713,693.61/28,309.73
  6. Step 6: Final answer
    x = 32,310.94

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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.