Home / 13,649.96-20,436.91-6,972

Finding the Fourth Proportional to 13,649.96, 20,436.91 and 6,972

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Solution

The fourth proportional to 13,649.96, 20,436.91 and 6,972 is: 10,438.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.96 : 20,436.91 = 6,972 : x
  2. Step 2: Convert to fraction form
    13,649.96/20,436.91 = 6,972/x
  3. Step 3: Cross multiply
    13,649.96x = 20,436.91 × 6,972
  4. Step 4: Simplify right side
    13,649.96x = 142,486,136.52
  5. Step 5: Solve for x
    x = 142,486,136.52/13,649.96
  6. Step 6: Final answer
    x = 10,438.58

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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.