Home / 21,949.17-30,289.64-11,877.39

Finding the Fourth Proportional to 21,949.17, 30,289.64 and 11,877.39

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Solution

The fourth proportional to 21,949.17, 30,289.64 and 11,877.39 is: 16,390.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949.17 : 30,289.64 = 11,877.39 : x
  2. Step 2: Convert to fraction form
    21,949.17/30,289.64 = 11,877.39/x
  3. Step 3: Cross multiply
    21,949.17x = 30,289.64 × 11,877.39
  4. Step 4: Simplify right side
    21,949.17x = 359,761,867.24
  5. Step 5: Solve for x
    x = 359,761,867.24/21,949.17
  6. Step 6: Final answer
    x = 16,390.68

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1.5x scale

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.