Home / 11,617.50-16,021.29-8,960.70

Finding the Fourth Proportional to 11,617.50, 16,021.29 and 8,960.70

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Solution

The fourth proportional to 11,617.50, 16,021.29 and 8,960.70 is: 12,357.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,617.50 : 16,021.29 = 8,960.70 : x
  2. Step 2: Convert to fraction form
    11,617.50/16,021.29 = 8,960.70/x
  3. Step 3: Cross multiply
    11,617.50x = 16,021.29 × 8,960.70
  4. Step 4: Simplify right side
    11,617.50x = 143,561,973.30
  5. Step 5: Solve for x
    x = 143,561,973.30/11,617.50
  6. Step 6: Final answer
    x = 12,357.39

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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.