Home / 20,837.87-28,751.82-12,342.65

Finding the Fourth Proportional to 20,837.87, 28,751.82 and 12,342.65

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Solution

The fourth proportional to 20,837.87, 28,751.82 and 12,342.65 is: 17,030.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.87 : 28,751.82 = 12,342.65 : x
  2. Step 2: Convert to fraction form
    20,837.87/28,751.82 = 12,342.65/x
  3. Step 3: Cross multiply
    20,837.87x = 28,751.82 × 12,342.65
  4. Step 4: Simplify right side
    20,837.87x = 354,873,651.12
  5. Step 5: Solve for x
    x = 354,873,651.12/20,837.87
  6. Step 6: Final answer
    x = 17,030.23

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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.