Home / 20,853.24-31,261.53-10,836.90

Finding the Fourth Proportional to 20,853.24, 31,261.53 and 10,836.90

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Solution

The fourth proportional to 20,853.24, 31,261.53 and 10,836.90 is: 16,245.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.24 : 31,261.53 = 10,836.90 : x
  2. Step 2: Convert to fraction form
    20,853.24/31,261.53 = 10,836.90/x
  3. Step 3: Cross multiply
    20,853.24x = 31,261.53 × 10,836.90
  4. Step 4: Simplify right side
    20,853.24x = 338,778,115.10
  5. Step 5: Solve for x
    x = 338,778,115.10/20,853.24
  6. Step 6: Final answer
    x = 16,245.83

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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.