Home / 11,558.40-17,321.80-5,315.73

Finding the Fourth Proportional to 11,558.40, 17,321.80 and 5,315.73

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Solution

The fourth proportional to 11,558.40, 17,321.80 and 5,315.73 is: 7,966.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,558.40 : 17,321.80 = 5,315.73 : x
  2. Step 2: Convert to fraction form
    11,558.40/17,321.80 = 5,315.73/x
  3. Step 3: Cross multiply
    11,558.40x = 17,321.80 × 5,315.73
  4. Step 4: Simplify right side
    11,558.40x = 92,078,011.91
  5. Step 5: Solve for x
    x = 92,078,011.91/11,558.40
  6. Step 6: Final answer
    x = 7,966.33

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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.