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Finding the Fourth Proportional to 29,166.40, 40,235.88 and 17,221.78

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Solution

The fourth proportional to 29,166.40, 40,235.88 and 17,221.78 is: 23,757.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,166.40 : 40,235.88 = 17,221.78 : x
  2. Step 2: Convert to fraction form
    29,166.40/40,235.88 = 17,221.78/x
  3. Step 3: Cross multiply
    29,166.40x = 40,235.88 × 17,221.78
  4. Step 4: Simplify right side
    29,166.40x = 692,933,473.47
  5. Step 5: Solve for x
    x = 692,933,473.47/29,166.40
  6. Step 6: Final answer
    x = 23,757.94

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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.