Home / 20,573.76-30,860.64-4,991.38

Finding the Fourth Proportional to 20,573.76, 30,860.64 and 4,991.38

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Solution

The fourth proportional to 20,573.76, 30,860.64 and 4,991.38 is: 7,487.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.76 : 30,860.64 = 4,991.38 : x
  2. Step 2: Convert to fraction form
    20,573.76/30,860.64 = 4,991.38/x
  3. Step 3: Cross multiply
    20,573.76x = 30,860.64 × 4,991.38
  4. Step 4: Simplify right side
    20,573.76x = 154,037,181.28
  5. Step 5: Solve for x
    x = 154,037,181.28/20,573.76
  6. Step 6: Final answer
    x = 7,487.07

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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.