Home / 20,143.48-30,204.84-9,040.65

Finding the Fourth Proportional to 20,143.48, 30,204.84 and 9,040.65

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Solution

The fourth proportional to 20,143.48, 30,204.84 and 9,040.65 is: 13,556.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.48 : 30,204.84 = 9,040.65 : x
  2. Step 2: Convert to fraction form
    20,143.48/30,204.84 = 9,040.65/x
  3. Step 3: Cross multiply
    20,143.48x = 30,204.84 × 9,040.65
  4. Step 4: Simplify right side
    20,143.48x = 273,071,341.54
  5. Step 5: Solve for x
    x = 273,071,341.54/20,143.48
  6. Step 6: Final answer
    x = 13,556.31

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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.