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Finding the Fourth Proportional to 29,513.84, 40,728.84 and 16,938.68

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Solution

The fourth proportional to 29,513.84, 40,728.84 and 16,938.68 is: 23,375.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,513.84 : 40,728.84 = 16,938.68 : x
  2. Step 2: Convert to fraction form
    29,513.84/40,728.84 = 16,938.68/x
  3. Step 3: Cross multiply
    29,513.84x = 40,728.84 × 16,938.68
  4. Step 4: Simplify right side
    29,513.84x = 689,892,787.53
  5. Step 5: Solve for x
    x = 689,892,787.53/29,513.84
  6. Step 6: Final answer
    x = 23,375.23

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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.