Home / 20,559.20-30,840.24-5,770.40

Finding the Fourth Proportional to 20,559.20, 30,840.24 and 5,770.40

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Solution

The fourth proportional to 20,559.20, 30,840.24 and 5,770.40 is: 8,656.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.20 : 30,840.24 = 5,770.40 : x
  2. Step 2: Convert to fraction form
    20,559.20/30,840.24 = 5,770.40/x
  3. Step 3: Cross multiply
    20,559.20x = 30,840.24 × 5,770.40
  4. Step 4: Simplify right side
    20,559.20x = 177,960,520.90
  5. Step 5: Solve for x
    x = 177,960,520.90/20,559.20
  6. Step 6: Final answer
    x = 8,656.00

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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.