Home / 20,840.04-31,245.48-10,446.12

Finding the Fourth Proportional to 20,840.04, 31,245.48 and 10,446.12

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Solution

The fourth proportional to 20,840.04, 31,245.48 and 10,446.12 is: 15,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.04 : 31,245.48 = 10,446.12 : x
  2. Step 2: Convert to fraction form
    20,840.04/31,245.48 = 10,446.12/x
  3. Step 3: Cross multiply
    20,840.04x = 31,245.48 × 10,446.12
  4. Step 4: Simplify right side
    20,840.04x = 326,394,033.54
  5. Step 5: Solve for x
    x = 326,394,033.54/20,840.04
  6. Step 6: Final answer
    x = 15,661.87

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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.