Home / 21,294.36-31,941.54-5,712.39

Finding the Fourth Proportional to 21,294.36, 31,941.54 and 5,712.39

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Solution

The fourth proportional to 21,294.36, 31,941.54 and 5,712.39 is: 8,568.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.36 : 31,941.54 = 5,712.39 : x
  2. Step 2: Convert to fraction form
    21,294.36/31,941.54 = 5,712.39/x
  3. Step 3: Cross multiply
    21,294.36x = 31,941.54 × 5,712.39
  4. Step 4: Simplify right side
    21,294.36x = 182,462,533.68
  5. Step 5: Solve for x
    x = 182,462,533.68/21,294.36
  6. Step 6: Final answer
    x = 8,568.59

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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.