Home / 14,187.20-21,282.26-5,429.48

Finding the Fourth Proportional to 14,187.20, 21,282.26 and 5,429.48

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Solution

The fourth proportional to 14,187.20, 21,282.26 and 5,429.48 is: 8,144.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.20 : 21,282.26 = 5,429.48 : x
  2. Step 2: Convert to fraction form
    14,187.20/21,282.26 = 5,429.48/x
  3. Step 3: Cross multiply
    14,187.20x = 21,282.26 × 5,429.48
  4. Step 4: Simplify right side
    14,187.20x = 115,551,605.02
  5. Step 5: Solve for x
    x = 115,551,605.02/14,187.20
  6. Step 6: Final answer
    x = 8,144.78

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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.