Home / 21,371.64-29,493.48-11,940.84

Finding the Fourth Proportional to 21,371.64, 29,493.48 and 11,940.84

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Solution

The fourth proportional to 21,371.64, 29,493.48 and 11,940.84 is: 16,478.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,371.64 : 29,493.48 = 11,940.84 : x
  2. Step 2: Convert to fraction form
    21,371.64/29,493.48 = 11,940.84/x
  3. Step 3: Cross multiply
    21,371.64x = 29,493.48 × 11,940.84
  4. Step 4: Simplify right side
    21,371.64x = 352,176,925.72
  5. Step 5: Solve for x
    x = 352,176,925.72/21,371.64
  6. Step 6: Final answer
    x = 16,478.70

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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.