Home / 18,378.26-25,361.86-9,994.76

Finding the Fourth Proportional to 18,378.26, 25,361.86 and 9,994.76

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Solution

The fourth proportional to 18,378.26, 25,361.86 and 9,994.76 is: 13,792.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.26 : 25,361.86 = 9,994.76 : x
  2. Step 2: Convert to fraction form
    18,378.26/25,361.86 = 9,994.76/x
  3. Step 3: Cross multiply
    18,378.26x = 25,361.86 × 9,994.76
  4. Step 4: Simplify right side
    18,378.26x = 253,485,703.85
  5. Step 5: Solve for x
    x = 253,485,703.85/18,378.26
  6. Step 6: Final answer
    x = 13,792.69

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Half scale
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Double scale
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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.