Home / 14,180.52-21,279.42-6,390.12

Finding the Fourth Proportional to 14,180.52, 21,279.42 and 6,390.12

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Solution

The fourth proportional to 14,180.52, 21,279.42 and 6,390.12 is: 9,589.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,180.52 : 21,279.42 = 6,390.12 : x
  2. Step 2: Convert to fraction form
    14,180.52/21,279.42 = 6,390.12/x
  3. Step 3: Cross multiply
    14,180.52x = 21,279.42 × 6,390.12
  4. Step 4: Simplify right side
    14,180.52x = 135,978,047.33
  5. Step 5: Solve for x
    x = 135,978,047.33/14,180.52
  6. Step 6: Final answer
    x = 9,589.07

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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.