Home / 20,145.48-30,207.83-9,042.65

Finding the Fourth Proportional to 20,145.48, 30,207.83 and 9,042.65

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Solution

The fourth proportional to 20,145.48, 30,207.83 and 9,042.65 is: 13,559.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.48 : 30,207.83 = 9,042.65 : x
  2. Step 2: Convert to fraction form
    20,145.48/30,207.83 = 9,042.65/x
  3. Step 3: Cross multiply
    20,145.48x = 30,207.83 × 9,042.65
  4. Step 4: Simplify right side
    20,145.48x = 273,158,833.95
  5. Step 5: Solve for x
    x = 273,158,833.95/20,145.48
  6. Step 6: Final answer
    x = 13,559.31

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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.