Home / 15,022.08-20,731.68-8,734

Finding the Fourth Proportional to 15,022.08, 20,731.68 and 8,734

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Solution

The fourth proportional to 15,022.08, 20,731.68 and 8,734 is: 12,053.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.08 : 20,731.68 = 8,734 : x
  2. Step 2: Convert to fraction form
    15,022.08/20,731.68 = 8,734/x
  3. Step 3: Cross multiply
    15,022.08x = 20,731.68 × 8,734
  4. Step 4: Simplify right side
    15,022.08x = 181,070,493.12
  5. Step 5: Solve for x
    x = 181,070,493.12/15,022.08
  6. Step 6: Final answer
    x = 12,053.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.