Home / 39,333.87-54,280.44-21,428.82

Finding the Fourth Proportional to 39,333.87, 54,280.44 and 21,428.82

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Solution

The fourth proportional to 39,333.87, 54,280.44 and 21,428.82 is: 29,571.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,333.87 : 54,280.44 = 21,428.82 : x
  2. Step 2: Convert to fraction form
    39,333.87/54,280.44 = 21,428.82/x
  3. Step 3: Cross multiply
    39,333.87x = 54,280.44 × 21,428.82
  4. Step 4: Simplify right side
    39,333.87x = 1,163,165,778.28
  5. Step 5: Solve for x
    x = 1,163,165,778.28/39,333.87
  6. Step 6: Final answer
    x = 29,571.61

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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.