Home / 10,742.28-16,109.52-3,720.38

Finding the Fourth Proportional to 10,742.28, 16,109.52 and 3,720.38

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Solution

The fourth proportional to 10,742.28, 16,109.52 and 3,720.38 is: 5,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,742.28 : 16,109.52 = 3,720.38 : x
  2. Step 2: Convert to fraction form
    10,742.28/16,109.52 = 3,720.38/x
  3. Step 3: Cross multiply
    10,742.28x = 16,109.52 × 3,720.38
  4. Step 4: Simplify right side
    10,742.28x = 59,933,536.02
  5. Step 5: Solve for x
    x = 59,933,536.02/10,742.28
  6. Step 6: Final answer
    x = 5,579.22

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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.