Home / 20,783.68-31,175.52-6,933.76

Finding the Fourth Proportional to 20,783.68, 31,175.52 and 6,933.76

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Solution

The fourth proportional to 20,783.68, 31,175.52 and 6,933.76 is: 10,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.68 : 31,175.52 = 6,933.76 : x
  2. Step 2: Convert to fraction form
    20,783.68/31,175.52 = 6,933.76/x
  3. Step 3: Cross multiply
    20,783.68x = 31,175.52 × 6,933.76
  4. Step 4: Simplify right side
    20,783.68x = 216,163,573.56
  5. Step 5: Solve for x
    x = 216,163,573.56/20,783.68
  6. Step 6: Final answer
    x = 10,400.64

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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.