Home / 20,741.56-31,045.20-11,240.92

Finding the Fourth Proportional to 20,741.56, 31,045.20 and 11,240.92

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Solution

The fourth proportional to 20,741.56, 31,045.20 and 11,240.92 is: 16,824.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.56 : 31,045.20 = 11,240.92 : x
  2. Step 2: Convert to fraction form
    20,741.56/31,045.20 = 11,240.92/x
  3. Step 3: Cross multiply
    20,741.56x = 31,045.20 × 11,240.92
  4. Step 4: Simplify right side
    20,741.56x = 348,976,609.58
  5. Step 5: Solve for x
    x = 348,976,609.58/20,741.56
  6. Step 6: Final answer
    x = 16,824.99

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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.