Home / 28,120.25-38,804.92-18,682.13

Finding the Fourth Proportional to 28,120.25, 38,804.92 and 18,682.13

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Solution

The fourth proportional to 28,120.25, 38,804.92 and 18,682.13 is: 25,780.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.25 : 38,804.92 = 18,682.13 : x
  2. Step 2: Convert to fraction form
    28,120.25/38,804.92 = 18,682.13/x
  3. Step 3: Cross multiply
    28,120.25x = 38,804.92 × 18,682.13
  4. Step 4: Simplify right side
    28,120.25x = 724,958,319.35
  5. Step 5: Solve for x
    x = 724,958,319.35/28,120.25
  6. Step 6: Final answer
    x = 25,780.65

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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.