Home / 34,731.54-47,930.40-21,310.20

Finding the Fourth Proportional to 34,731.54, 47,930.40 and 21,310.20

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Solution

The fourth proportional to 34,731.54, 47,930.40 and 21,310.20 is: 29,408.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,731.54 : 47,930.40 = 21,310.20 : x
  2. Step 2: Convert to fraction form
    34,731.54/47,930.40 = 21,310.20/x
  3. Step 3: Cross multiply
    34,731.54x = 47,930.40 × 21,310.20
  4. Step 4: Simplify right side
    34,731.54x = 1,021,406,410.08
  5. Step 5: Solve for x
    x = 1,021,406,410.08/34,731.54
  6. Step 6: Final answer
    x = 29,408.61

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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.