Home / 22,199.62-30,635.36-12,128.64

Finding the Fourth Proportional to 22,199.62, 30,635.36 and 12,128.64

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Solution

The fourth proportional to 22,199.62, 30,635.36 and 12,128.64 is: 16,737.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,199.62 : 30,635.36 = 12,128.64 : x
  2. Step 2: Convert to fraction form
    22,199.62/30,635.36 = 12,128.64/x
  3. Step 3: Cross multiply
    22,199.62x = 30,635.36 × 12,128.64
  4. Step 4: Simplify right side
    22,199.62x = 371,565,099.53
  5. Step 5: Solve for x
    x = 371,565,099.53/22,199.62
  6. Step 6: Final answer
    x = 16,737.45

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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.