Home / 21,844.86-30,136.46-13,772.16

Finding the Fourth Proportional to 21,844.86, 30,136.46 and 13,772.16

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Solution

The fourth proportional to 21,844.86, 30,136.46 and 13,772.16 is: 18,999.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,844.86 : 30,136.46 = 13,772.16 : x
  2. Step 2: Convert to fraction form
    21,844.86/30,136.46 = 13,772.16/x
  3. Step 3: Cross multiply
    21,844.86x = 30,136.46 × 13,772.16
  4. Step 4: Simplify right side
    21,844.86x = 415,044,080.09
  5. Step 5: Solve for x
    x = 415,044,080.09/21,844.86
  6. Step 6: Final answer
    x = 18,999.63

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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.