Home / 21,113.61-29,136.56-11,682.24

Finding the Fourth Proportional to 21,113.61, 29,136.56 and 11,682.24

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Solution

The fourth proportional to 21,113.61, 29,136.56 and 11,682.24 is: 16,121.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.61 : 29,136.56 = 11,682.24 : x
  2. Step 2: Convert to fraction form
    21,113.61/29,136.56 = 11,682.24/x
  3. Step 3: Cross multiply
    21,113.61x = 29,136.56 × 11,682.24
  4. Step 4: Simplify right side
    21,113.61x = 340,380,228.28
  5. Step 5: Solve for x
    x = 340,380,228.28/21,113.61
  6. Step 6: Final answer
    x = 16,121.37

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Half scale
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Double scale
Find fourth proportional to 21,114.61, 29,137.93 and 11,683.24
Similar ratio
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1.5x scale

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.