Home / 20,844.64-31,245.04-7,688.64

Finding the Fourth Proportional to 20,844.64, 31,245.04 and 7,688.64

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Solution

The fourth proportional to 20,844.64, 31,245.04 and 7,688.64 is: 11,524.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.64 : 31,245.04 = 7,688.64 : x
  2. Step 2: Convert to fraction form
    20,844.64/31,245.04 = 7,688.64/x
  3. Step 3: Cross multiply
    20,844.64x = 31,245.04 × 7,688.64
  4. Step 4: Simplify right side
    20,844.64x = 240,231,864.35
  5. Step 5: Solve for x
    x = 240,231,864.35/20,844.64
  6. Step 6: Final answer
    x = 11,524.87

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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.