Home / 20,373.40-30,568.56-18,738.64

Finding the Fourth Proportional to 20,373.40, 30,568.56 and 18,738.64

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Solution

The fourth proportional to 20,373.40, 30,568.56 and 18,738.64 is: 28,115.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,373.40 : 30,568.56 = 18,738.64 : x
  2. Step 2: Convert to fraction form
    20,373.40/30,568.56 = 18,738.64/x
  3. Step 3: Cross multiply
    20,373.40x = 30,568.56 × 18,738.64
  4. Step 4: Simplify right side
    20,373.40x = 572,813,241.16
  5. Step 5: Solve for x
    x = 572,813,241.16/20,373.40
  6. Step 6: Final answer
    x = 28,115.74

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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.