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Finding the Fourth Proportional to 22,361.88, 30,862.86 and 13,865.52

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Solution

The fourth proportional to 22,361.88, 30,862.86 and 13,865.52 is: 19,136.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,361.88 : 30,862.86 = 13,865.52 : x
  2. Step 2: Convert to fraction form
    22,361.88/30,862.86 = 13,865.52/x
  3. Step 3: Cross multiply
    22,361.88x = 30,862.86 × 13,865.52
  4. Step 4: Simplify right side
    22,361.88x = 427,929,602.59
  5. Step 5: Solve for x
    x = 427,929,602.59/22,361.88
  6. Step 6: Final answer
    x = 19,136.57

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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.