Home / 29,138.49-43,720.02-18,620.37

Finding the Fourth Proportional to 29,138.49, 43,720.02 and 18,620.37

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Solution

The fourth proportional to 29,138.49, 43,720.02 and 18,620.37 is: 27,938.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,138.49 : 43,720.02 = 18,620.37 : x
  2. Step 2: Convert to fraction form
    29,138.49/43,720.02 = 18,620.37/x
  3. Step 3: Cross multiply
    29,138.49x = 43,720.02 × 18,620.37
  4. Step 4: Simplify right side
    29,138.49x = 814,082,948.81
  5. Step 5: Solve for x
    x = 814,082,948.81/29,138.49
  6. Step 6: Final answer
    x = 27,938.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.