Home / 12,508.77-17,189.86-11,930.55

Finding the Fourth Proportional to 12,508.77, 17,189.86 and 11,930.55

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Solution

The fourth proportional to 12,508.77, 17,189.86 and 11,930.55 is: 16,395.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.77 : 17,189.86 = 11,930.55 : x
  2. Step 2: Convert to fraction form
    12,508.77/17,189.86 = 11,930.55/x
  3. Step 3: Cross multiply
    12,508.77x = 17,189.86 × 11,930.55
  4. Step 4: Simplify right side
    12,508.77x = 205,084,454.40
  5. Step 5: Solve for x
    x = 205,084,454.40/12,508.77
  6. Step 6: Final answer
    x = 16,395.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.