Home / 28,152.25-38,840.67-16,215.31

Finding the Fourth Proportional to 28,152.25, 38,840.67 and 16,215.31

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Solution

The fourth proportional to 28,152.25, 38,840.67 and 16,215.31 is: 22,371.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,152.25 : 38,840.67 = 16,215.31 : x
  2. Step 2: Convert to fraction form
    28,152.25/38,840.67 = 16,215.31/x
  3. Step 3: Cross multiply
    28,152.25x = 38,840.67 × 16,215.31
  4. Step 4: Simplify right side
    28,152.25x = 629,813,504.66
  5. Step 5: Solve for x
    x = 629,813,504.66/28,152.25
  6. Step 6: Final answer
    x = 22,371.69

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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.