Home / 28,945.80-39,947.13-16,200.09

Finding the Fourth Proportional to 28,945.80, 39,947.13 and 16,200.09

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Solution

The fourth proportional to 28,945.80, 39,947.13 and 16,200.09 is: 22,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,945.80 : 39,947.13 = 16,200.09 : x
  2. Step 2: Convert to fraction form
    28,945.80/39,947.13 = 16,200.09/x
  3. Step 3: Cross multiply
    28,945.80x = 39,947.13 × 16,200.09
  4. Step 4: Simplify right side
    28,945.80x = 647,147,101.24
  5. Step 5: Solve for x
    x = 647,147,101.24/28,945.80
  6. Step 6: Final answer
    x = 22,357.20

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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.