Home / 13,739.76-18,976.32-9,255.66

Finding the Fourth Proportional to 13,739.76, 18,976.32 and 9,255.66

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Solution

The fourth proportional to 13,739.76, 18,976.32 and 9,255.66 is: 12,783.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.76 : 18,976.32 = 9,255.66 : x
  2. Step 2: Convert to fraction form
    13,739.76/18,976.32 = 9,255.66/x
  3. Step 3: Cross multiply
    13,739.76x = 18,976.32 × 9,255.66
  4. Step 4: Simplify right side
    13,739.76x = 175,638,365.97
  5. Step 5: Solve for x
    x = 175,638,365.97/13,739.76
  6. Step 6: Final answer
    x = 12,783.22

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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.