Home / 11,817.75-16,291.31-8,454.74

Finding the Fourth Proportional to 11,817.75, 16,291.31 and 8,454.74

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Solution

The fourth proportional to 11,817.75, 16,291.31 and 8,454.74 is: 11,655.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.75 : 16,291.31 = 8,454.74 : x
  2. Step 2: Convert to fraction form
    11,817.75/16,291.31 = 8,454.74/x
  3. Step 3: Cross multiply
    11,817.75x = 16,291.31 × 8,454.74
  4. Step 4: Simplify right side
    11,817.75x = 137,738,666.58
  5. Step 5: Solve for x
    x = 137,738,666.58/11,817.75
  6. Step 6: Final answer
    x = 11,655.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.