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Finding the Fourth Proportional to 29,005.21, 40,015.19 and 18,930.02

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Solution

The fourth proportional to 29,005.21, 40,015.19 and 18,930.02 is: 26,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,005.21 : 40,015.19 = 18,930.02 : x
  2. Step 2: Convert to fraction form
    29,005.21/40,015.19 = 18,930.02/x
  3. Step 3: Cross multiply
    29,005.21x = 40,015.19 × 18,930.02
  4. Step 4: Simplify right side
    29,005.21x = 757,488,347.00
  5. Step 5: Solve for x
    x = 757,488,347.00/29,005.21
  6. Step 6: Final answer
    x = 26,115.60

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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.