Home / 21,383.19-29,509.71-11,951.75

Finding the Fourth Proportional to 21,383.19, 29,509.71 and 11,951.75

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Solution

The fourth proportional to 21,383.19, 29,509.71 and 11,951.75 is: 16,493.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.19 : 29,509.71 = 11,951.75 : x
  2. Step 2: Convert to fraction form
    21,383.19/29,509.71 = 11,951.75/x
  3. Step 3: Cross multiply
    21,383.19x = 29,509.71 × 11,951.75
  4. Step 4: Simplify right side
    21,383.19x = 352,692,676.49
  5. Step 5: Solve for x
    x = 352,692,676.49/21,383.19
  6. Step 6: Final answer
    x = 16,493.92

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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.