Home / 21,310.87-29,410.60-12,358.29

Finding the Fourth Proportional to 21,310.87, 29,410.60 and 12,358.29

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Solution

The fourth proportional to 21,310.87, 29,410.60 and 12,358.29 is: 17,055.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.87 : 29,410.60 = 12,358.29 : x
  2. Step 2: Convert to fraction form
    21,310.87/29,410.60 = 12,358.29/x
  3. Step 3: Cross multiply
    21,310.87x = 29,410.60 × 12,358.29
  4. Step 4: Simplify right side
    21,310.87x = 363,464,771.29
  5. Step 5: Solve for x
    x = 363,464,771.29/21,310.87
  6. Step 6: Final answer
    x = 17,055.37

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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.