Home / 18,378.28-25,361.84-9,994.80

Finding the Fourth Proportional to 18,378.28, 25,361.84 and 9,994.80

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Solution

The fourth proportional to 18,378.28, 25,361.84 and 9,994.80 is: 13,792.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.28 : 25,361.84 = 9,994.80 : x
  2. Step 2: Convert to fraction form
    18,378.28/25,361.84 = 9,994.80/x
  3. Step 3: Cross multiply
    18,378.28x = 25,361.84 × 9,994.80
  4. Step 4: Simplify right side
    18,378.28x = 253,486,518.43
  5. Step 5: Solve for x
    x = 253,486,518.43/18,378.28
  6. Step 6: Final answer
    x = 13,792.72

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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.