Home / 14,115.85-21,155.31-5,786.12

Finding the Fourth Proportional to 14,115.85, 21,155.31 and 5,786.12

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Solution

The fourth proportional to 14,115.85, 21,155.31 and 5,786.12 is: 8,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.85 : 21,155.31 = 5,786.12 : x
  2. Step 2: Convert to fraction form
    14,115.85/21,155.31 = 5,786.12/x
  3. Step 3: Cross multiply
    14,115.85x = 21,155.31 × 5,786.12
  4. Step 4: Simplify right side
    14,115.85x = 122,407,096.19
  5. Step 5: Solve for x
    x = 122,407,096.19/14,115.85
  6. Step 6: Final answer
    x = 8,671.60

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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.