Home / 28,240.10-38,960.25-19,739.96

Finding the Fourth Proportional to 28,240.10, 38,960.25 and 19,739.96

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Solution

The fourth proportional to 28,240.10, 38,960.25 and 19,739.96 is: 27,233.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.10 : 38,960.25 = 19,739.96 : x
  2. Step 2: Convert to fraction form
    28,240.10/38,960.25 = 19,739.96/x
  3. Step 3: Cross multiply
    28,240.10x = 38,960.25 × 19,739.96
  4. Step 4: Simplify right side
    28,240.10x = 769,073,776.59
  5. Step 5: Solve for x
    x = 769,073,776.59/28,240.10
  6. Step 6: Final answer
    x = 27,233.39

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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.