Home / 12,513.29-18,791.37-11,110.86

Finding the Fourth Proportional to 12,513.29, 18,791.37 and 11,110.86

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Solution

The fourth proportional to 12,513.29, 18,791.37 and 11,110.86 is: 16,685.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,513.29 : 18,791.37 = 11,110.86 : x
  2. Step 2: Convert to fraction form
    12,513.29/18,791.37 = 11,110.86/x
  3. Step 3: Cross multiply
    12,513.29x = 18,791.37 × 11,110.86
  4. Step 4: Simplify right side
    12,513.29x = 208,788,281.28
  5. Step 5: Solve for x
    x = 208,788,281.28/12,513.29
  6. Step 6: Final answer
    x = 16,685.33

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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.