Home / 14,144.16-21,216.96-5,379.78

Finding the Fourth Proportional to 14,144.16, 21,216.96 and 5,379.78

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Solution

The fourth proportional to 14,144.16, 21,216.96 and 5,379.78 is: 8,069.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,144.16 : 21,216.96 = 5,379.78 : x
  2. Step 2: Convert to fraction form
    14,144.16/21,216.96 = 5,379.78/x
  3. Step 3: Cross multiply
    14,144.16x = 21,216.96 × 5,379.78
  4. Step 4: Simplify right side
    14,144.16x = 114,142,577.07
  5. Step 5: Solve for x
    x = 114,142,577.07/14,144.16
  6. Step 6: Final answer
    x = 8,069.94

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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.