Home / 42,906.96-64,371.12-13,324.32

Finding the Fourth Proportional to 42,906.96, 64,371.12 and 13,324.32

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Solution

The fourth proportional to 42,906.96, 64,371.12 and 13,324.32 is: 19,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,906.96 : 64,371.12 = 13,324.32 : x
  2. Step 2: Convert to fraction form
    42,906.96/64,371.12 = 13,324.32/x
  3. Step 3: Cross multiply
    42,906.96x = 64,371.12 × 13,324.32
  4. Step 4: Simplify right side
    42,906.96x = 857,701,401.64
  5. Step 5: Solve for x
    x = 857,701,401.64/42,906.96
  6. Step 6: Final answer
    x = 19,989.80

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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.