Home / 21,136.54-29,168.12-11,576.32

Finding the Fourth Proportional to 21,136.54, 29,168.12 and 11,576.32

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Solution

The fourth proportional to 21,136.54, 29,168.12 and 11,576.32 is: 15,975.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.54 : 29,168.12 = 11,576.32 : x
  2. Step 2: Convert to fraction form
    21,136.54/29,168.12 = 11,576.32/x
  3. Step 3: Cross multiply
    21,136.54x = 29,168.12 × 11,576.32
  4. Step 4: Simplify right side
    21,136.54x = 337,659,490.92
  5. Step 5: Solve for x
    x = 337,659,490.92/21,136.54
  6. Step 6: Final answer
    x = 15,975.15

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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.