Home / 21,136.46-29,168.09-11,445.86

Finding the Fourth Proportional to 21,136.46, 29,168.09 and 11,445.86

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Solution

The fourth proportional to 21,136.46, 29,168.09 and 11,445.86 is: 15,795.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.46 : 29,168.09 = 11,445.86 : x
  2. Step 2: Convert to fraction form
    21,136.46/29,168.09 = 11,445.86/x
  3. Step 3: Cross multiply
    21,136.46x = 29,168.09 × 11,445.86
  4. Step 4: Simplify right side
    21,136.46x = 333,853,976.14
  5. Step 5: Solve for x
    x = 333,853,976.14/21,136.46
  6. Step 6: Final answer
    x = 15,795.17

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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.