Home / 28,427.80-39,227.08-16,486.80

Finding the Fourth Proportional to 28,427.80, 39,227.08 and 16,486.80

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Solution

The fourth proportional to 28,427.80, 39,227.08 and 16,486.80 is: 22,749.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.80 : 39,227.08 = 16,486.80 : x
  2. Step 2: Convert to fraction form
    28,427.80/39,227.08 = 16,486.80/x
  3. Step 3: Cross multiply
    28,427.80x = 39,227.08 × 16,486.80
  4. Step 4: Simplify right side
    28,427.80x = 646,729,022.54
  5. Step 5: Solve for x
    x = 646,729,022.54/28,427.80
  6. Step 6: Final answer
    x = 22,749.88

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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.