Home / 10,656.91-15,985.68-3,261.21

Finding the Fourth Proportional to 10,656.91, 15,985.68 and 3,261.21

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Solution

The fourth proportional to 10,656.91, 15,985.68 and 3,261.21 is: 4,891.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,656.91 : 15,985.68 = 3,261.21 : x
  2. Step 2: Convert to fraction form
    10,656.91/15,985.68 = 3,261.21/x
  3. Step 3: Cross multiply
    10,656.91x = 15,985.68 × 3,261.21
  4. Step 4: Simplify right side
    10,656.91x = 52,132,587.30
  5. Step 5: Solve for x
    x = 52,132,587.30/10,656.91
  6. Step 6: Final answer
    x = 4,891.90

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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.