Home / 20,249.04-30,345.84-12,858.65

Finding the Fourth Proportional to 20,249.04, 30,345.84 and 12,858.65

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Solution

The fourth proportional to 20,249.04, 30,345.84 and 12,858.65 is: 19,270.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,249.04 : 30,345.84 = 12,858.65 : x
  2. Step 2: Convert to fraction form
    20,249.04/30,345.84 = 12,858.65/x
  3. Step 3: Cross multiply
    20,249.04x = 30,345.84 × 12,858.65
  4. Step 4: Simplify right side
    20,249.04x = 390,206,497.58
  5. Step 5: Solve for x
    x = 390,206,497.58/20,249.04
  6. Step 6: Final answer
    x = 19,270.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.