Home / 21,277.49-31,920.44-6,284.86

Finding the Fourth Proportional to 21,277.49, 31,920.44 and 6,284.86

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Solution

The fourth proportional to 21,277.49, 31,920.44 and 6,284.86 is: 9,428.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.49 : 31,920.44 = 6,284.86 : x
  2. Step 2: Convert to fraction form
    21,277.49/31,920.44 = 6,284.86/x
  3. Step 3: Cross multiply
    21,277.49x = 31,920.44 × 6,284.86
  4. Step 4: Simplify right side
    21,277.49x = 200,615,385.31
  5. Step 5: Solve for x
    x = 200,615,385.31/21,277.49
  6. Step 6: Final answer
    x = 9,428.53

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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.