Home / 18,395.96-25,378.54-11,319.80

Finding the Fourth Proportional to 18,395.96, 25,378.54 and 11,319.80

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Solution

The fourth proportional to 18,395.96, 25,378.54 and 11,319.80 is: 15,616.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,395.96 : 25,378.54 = 11,319.80 : x
  2. Step 2: Convert to fraction form
    18,395.96/25,378.54 = 11,319.80/x
  3. Step 3: Cross multiply
    18,395.96x = 25,378.54 × 11,319.80
  4. Step 4: Simplify right side
    18,395.96x = 287,279,997.09
  5. Step 5: Solve for x
    x = 287,279,997.09/18,395.96
  6. Step 6: Final answer
    x = 15,616.47

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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.