Home / 20,467.66-30,700.10-7,985.38

Finding the Fourth Proportional to 20,467.66, 30,700.10 and 7,985.38

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Solution

The fourth proportional to 20,467.66, 30,700.10 and 7,985.38 is: 11,977.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,467.66 : 30,700.10 = 7,985.38 : x
  2. Step 2: Convert to fraction form
    20,467.66/30,700.10 = 7,985.38/x
  3. Step 3: Cross multiply
    20,467.66x = 30,700.10 × 7,985.38
  4. Step 4: Simplify right side
    20,467.66x = 245,151,964.54
  5. Step 5: Solve for x
    x = 245,151,964.54/20,467.66
  6. Step 6: Final answer
    x = 11,977.53

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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.