Home / 22,200.28-30,636.60-12,128.44

Finding the Fourth Proportional to 22,200.28, 30,636.60 and 12,128.44

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Solution

The fourth proportional to 22,200.28, 30,636.60 and 12,128.44 is: 16,737.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,200.28 : 30,636.60 = 12,128.44 : x
  2. Step 2: Convert to fraction form
    22,200.28/30,636.60 = 12,128.44/x
  3. Step 3: Cross multiply
    22,200.28x = 30,636.60 × 12,128.44
  4. Step 4: Simplify right side
    22,200.28x = 371,574,164.90
  5. Step 5: Solve for x
    x = 371,574,164.90/22,200.28
  6. Step 6: Final answer
    x = 16,737.36

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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.