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Finding the Fourth Proportional to 29,665, 40,942.28 and 16,918.21

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Solution

The fourth proportional to 29,665, 40,942.28 and 16,918.21 is: 23,349.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,665 : 40,942.28 = 16,918.21 : x
  2. Step 2: Convert to fraction form
    29,665/40,942.28 = 16,918.21/x
  3. Step 3: Cross multiply
    29,665x = 40,942.28 × 16,918.21
  4. Step 4: Simplify right side
    29,665x = 692,670,090.92
  5. Step 5: Solve for x
    x = 692,670,090.92/29,665
  6. Step 6: Final answer
    x = 23,349.74

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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.