Home / 14,115.16-21,174.80-4,255.20

Finding the Fourth Proportional to 14,115.16, 21,174.80 and 4,255.20

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Solution

The fourth proportional to 14,115.16, 21,174.80 and 4,255.20 is: 6,383.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.16 : 21,174.80 = 4,255.20 : x
  2. Step 2: Convert to fraction form
    14,115.16/21,174.80 = 4,255.20/x
  3. Step 3: Cross multiply
    14,115.16x = 21,174.80 × 4,255.20
  4. Step 4: Simplify right side
    14,115.16x = 90,103,008.96
  5. Step 5: Solve for x
    x = 90,103,008.96/14,115.16
  6. Step 6: Final answer
    x = 6,383.42

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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.