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Finding the Fourth Proportional to 21,889.69, 32,787.36 and 14,830.97

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Solution

The fourth proportional to 21,889.69, 32,787.36 and 14,830.97 is: 22,214.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,889.69 : 32,787.36 = 14,830.97 : x
  2. Step 2: Convert to fraction form
    21,889.69/32,787.36 = 14,830.97/x
  3. Step 3: Cross multiply
    21,889.69x = 32,787.36 × 14,830.97
  4. Step 4: Simplify right side
    21,889.69x = 486,268,188.60
  5. Step 5: Solve for x
    x = 486,268,188.60/21,889.69
  6. Step 6: Final answer
    x = 22,214.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.