Home / 20,370.13-30,568.75-8,372.12

Finding the Fourth Proportional to 20,370.13, 30,568.75 and 8,372.12

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Solution

The fourth proportional to 20,370.13, 30,568.75 and 8,372.12 is: 12,563.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.13 : 30,568.75 = 8,372.12 : x
  2. Step 2: Convert to fraction form
    20,370.13/30,568.75 = 8,372.12/x
  3. Step 3: Cross multiply
    20,370.13x = 30,568.75 × 8,372.12
  4. Step 4: Simplify right side
    20,370.13x = 255,925,124.97
  5. Step 5: Solve for x
    x = 255,925,124.97/20,370.13
  6. Step 6: Final answer
    x = 12,563.75

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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.