Home / 21,814.44-30,103.60-12,862.32

Finding the Fourth Proportional to 21,814.44, 30,103.60 and 12,862.32

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Solution

The fourth proportional to 21,814.44, 30,103.60 and 12,862.32 is: 17,749.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,814.44 : 30,103.60 = 12,862.32 : x
  2. Step 2: Convert to fraction form
    21,814.44/30,103.60 = 12,862.32/x
  3. Step 3: Cross multiply
    21,814.44x = 30,103.60 × 12,862.32
  4. Step 4: Simplify right side
    21,814.44x = 387,202,136.35
  5. Step 5: Solve for x
    x = 387,202,136.35/21,814.44
  6. Step 6: Final answer
    x = 17,749.81

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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.