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Finding the Fourth Proportional to 29,151.60, 40,228.04 and 17,218.78

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Solution

The fourth proportional to 29,151.60, 40,228.04 and 17,218.78 is: 23,761.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,151.60 : 40,228.04 = 17,218.78 : x
  2. Step 2: Convert to fraction form
    29,151.60/40,228.04 = 17,218.78/x
  3. Step 3: Cross multiply
    29,151.60x = 40,228.04 × 17,218.78
  4. Step 4: Simplify right side
    29,151.60x = 692,677,770.59
  5. Step 5: Solve for x
    x = 692,677,770.59/29,151.60
  6. Step 6: Final answer
    x = 23,761.23

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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.