Home / 19,136.28-28,693.26-8,742.36

Finding the Fourth Proportional to 19,136.28, 28,693.26 and 8,742.36

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Solution

The fourth proportional to 19,136.28, 28,693.26 and 8,742.36 is: 13,108.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.28 : 28,693.26 = 8,742.36 : x
  2. Step 2: Convert to fraction form
    19,136.28/28,693.26 = 8,742.36/x
  3. Step 3: Cross multiply
    19,136.28x = 28,693.26 × 8,742.36
  4. Step 4: Simplify right side
    19,136.28x = 250,846,808.49
  5. Step 5: Solve for x
    x = 250,846,808.49/19,136.28
  6. Step 6: Final answer
    x = 13,108.44

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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.