Home / 28,409.54-39,198.80-16,309.31

Finding the Fourth Proportional to 28,409.54, 39,198.80 and 16,309.31

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Solution

The fourth proportional to 28,409.54, 39,198.80 and 16,309.31 is: 22,503.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409.54 : 39,198.80 = 16,309.31 : x
  2. Step 2: Convert to fraction form
    28,409.54/39,198.80 = 16,309.31/x
  3. Step 3: Cross multiply
    28,409.54x = 39,198.80 × 16,309.31
  4. Step 4: Simplify right side
    28,409.54x = 639,305,225.61
  5. Step 5: Solve for x
    x = 639,305,225.61/28,409.54
  6. Step 6: Final answer
    x = 22,503.19

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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.