Home / 18,923.60-28,361.64-11,113.04

Finding the Fourth Proportional to 18,923.60, 28,361.64 and 11,113.04

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Solution

The fourth proportional to 18,923.60, 28,361.64 and 11,113.04 is: 16,655.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,923.60 : 28,361.64 = 11,113.04 : x
  2. Step 2: Convert to fraction form
    18,923.60/28,361.64 = 11,113.04/x
  3. Step 3: Cross multiply
    18,923.60x = 28,361.64 × 11,113.04
  4. Step 4: Simplify right side
    18,923.60x = 315,184,039.79
  5. Step 5: Solve for x
    x = 315,184,039.79/18,923.60
  6. Step 6: Final answer
    x = 16,655.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.