Home / 20,873.64-31,311.90-7,725.72

Finding the Fourth Proportional to 20,873.64, 31,311.90 and 7,725.72

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Solution

The fourth proportional to 20,873.64, 31,311.90 and 7,725.72 is: 11,589.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.64 : 31,311.90 = 7,725.72 : x
  2. Step 2: Convert to fraction form
    20,873.64/31,311.90 = 7,725.72/x
  3. Step 3: Cross multiply
    20,873.64x = 31,311.90 × 7,725.72
  4. Step 4: Simplify right side
    20,873.64x = 241,906,972.07
  5. Step 5: Solve for x
    x = 241,906,972.07/20,873.64
  6. Step 6: Final answer
    x = 11,589.11

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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.