Home / 20,158.56-30,244.32-9,771.12

Finding the Fourth Proportional to 20,158.56, 30,244.32 and 9,771.12

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Solution

The fourth proportional to 20,158.56, 30,244.32 and 9,771.12 is: 14,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.56 : 30,244.32 = 9,771.12 : x
  2. Step 2: Convert to fraction form
    20,158.56/30,244.32 = 9,771.12/x
  3. Step 3: Cross multiply
    20,158.56x = 30,244.32 × 9,771.12
  4. Step 4: Simplify right side
    20,158.56x = 295,520,880.04
  5. Step 5: Solve for x
    x = 295,520,880.04/20,158.56
  6. Step 6: Final answer
    x = 14,659.82

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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.