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Finding the Fourth Proportional to 29,657.79, 40,938.21 and 18,336.03

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Solution

The fourth proportional to 29,657.79, 40,938.21 and 18,336.03 is: 25,310.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,657.79 : 40,938.21 = 18,336.03 : x
  2. Step 2: Convert to fraction form
    29,657.79/40,938.21 = 18,336.03/x
  3. Step 3: Cross multiply
    29,657.79x = 40,938.21 × 18,336.03
  4. Step 4: Simplify right side
    29,657.79x = 750,644,246.71
  5. Step 5: Solve for x
    x = 750,644,246.71/29,657.79
  6. Step 6: Final answer
    x = 25,310.19

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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.