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Finding the Fourth Proportional to 29,659.98, 40,930.10 and 16,912.30

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Solution

The fourth proportional to 29,659.98, 40,930.10 and 16,912.30 is: 23,338.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,659.98 : 40,930.10 = 16,912.30 : x
  2. Step 2: Convert to fraction form
    29,659.98/40,930.10 = 16,912.30/x
  3. Step 3: Cross multiply
    29,659.98x = 40,930.10 × 16,912.30
  4. Step 4: Simplify right side
    29,659.98x = 692,222,130.23
  5. Step 5: Solve for x
    x = 692,222,130.23/29,659.98
  6. Step 6: Final answer
    x = 23,338.59

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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.