Home / 20,687.52-31,015.06-10,824.96

Finding the Fourth Proportional to 20,687.52, 31,015.06 and 10,824.96

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Solution

The fourth proportional to 20,687.52, 31,015.06 and 10,824.96 is: 16,228.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.52 : 31,015.06 = 10,824.96 : x
  2. Step 2: Convert to fraction form
    20,687.52/31,015.06 = 10,824.96/x
  3. Step 3: Cross multiply
    20,687.52x = 31,015.06 × 10,824.96
  4. Step 4: Simplify right side
    20,687.52x = 335,736,783.90
  5. Step 5: Solve for x
    x = 335,736,783.90/20,687.52
  6. Step 6: Final answer
    x = 16,228.95

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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.