Home / 14,279.20-21,420.84-4,419.32

Finding the Fourth Proportional to 14,279.20, 21,420.84 and 4,419.32

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Solution

The fourth proportional to 14,279.20, 21,420.84 and 4,419.32 is: 6,629.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.20 : 21,420.84 = 4,419.32 : x
  2. Step 2: Convert to fraction form
    14,279.20/21,420.84 = 4,419.32/x
  3. Step 3: Cross multiply
    14,279.20x = 21,420.84 × 4,419.32
  4. Step 4: Simplify right side
    14,279.20x = 94,665,546.63
  5. Step 5: Solve for x
    x = 94,665,546.63/14,279.20
  6. Step 6: Final answer
    x = 6,629.61

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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.