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Finding the Fourth Proportional to 29,478, 40,680 and 16,903.92

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Solution

The fourth proportional to 29,478, 40,680 and 16,903.92 is: 23,327.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,478 : 40,680 = 16,903.92 : x
  2. Step 2: Convert to fraction form
    29,478/40,680 = 16,903.92/x
  3. Step 3: Cross multiply
    29,478x = 40,680 × 16,903.92
  4. Step 4: Simplify right side
    29,478x = 687,651,465.60
  5. Step 5: Solve for x
    x = 687,651,465.60/29,478
  6. Step 6: Final answer
    x = 23,327.62

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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.