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Finding the Fourth Proportional to 22,124.64, 30,531.99 and 12,188.64

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Solution

The fourth proportional to 22,124.64, 30,531.99 and 12,188.64 is: 16,820.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,124.64 : 30,531.99 = 12,188.64 : x
  2. Step 2: Convert to fraction form
    22,124.64/30,531.99 = 12,188.64/x
  3. Step 3: Cross multiply
    22,124.64x = 30,531.99 × 12,188.64
  4. Step 4: Simplify right side
    22,124.64x = 372,143,434.59
  5. Step 5: Solve for x
    x = 372,143,434.59/22,124.64
  6. Step 6: Final answer
    x = 16,820.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.