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Finding the Fourth Proportional to 29,004.21, 40,013.81 and 18,929.02

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Solution

The fourth proportional to 29,004.21, 40,013.81 and 18,929.02 is: 26,114.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,004.21 : 40,013.81 = 18,929.02 : x
  2. Step 2: Convert to fraction form
    29,004.21/40,013.81 = 18,929.02/x
  3. Step 3: Cross multiply
    29,004.21x = 40,013.81 × 18,929.02
  4. Step 4: Simplify right side
    29,004.21x = 757,422,209.77
  5. Step 5: Solve for x
    x = 757,422,209.77/29,004.21
  6. Step 6: Final answer
    x = 26,114.22

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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.