Home / 20,276.40-30,411.84-5,486.64

Finding the Fourth Proportional to 20,276.40, 30,411.84 and 5,486.64

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Solution

The fourth proportional to 20,276.40, 30,411.84 and 5,486.64 is: 8,229.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.40 : 30,411.84 = 5,486.64 : x
  2. Step 2: Convert to fraction form
    20,276.40/30,411.84 = 5,486.64/x
  3. Step 3: Cross multiply
    20,276.40x = 30,411.84 × 5,486.64
  4. Step 4: Simplify right side
    20,276.40x = 166,858,817.82
  5. Step 5: Solve for x
    x = 166,858,817.82/20,276.40
  6. Step 6: Final answer
    x = 8,229.21

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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.