Home / 21,123.47-29,205.12-20,194

Finding the Fourth Proportional to 21,123.47, 29,205.12 and 20,194

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Solution

The fourth proportional to 21,123.47, 29,205.12 and 20,194 is: 27,920.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123.47 : 29,205.12 = 20,194 : x
  2. Step 2: Convert to fraction form
    21,123.47/29,205.12 = 20,194/x
  3. Step 3: Cross multiply
    21,123.47x = 29,205.12 × 20,194
  4. Step 4: Simplify right side
    21,123.47x = 589,768,193.28
  5. Step 5: Solve for x
    x = 589,768,193.28/21,123.47
  6. Step 6: Final answer
    x = 27,920.04

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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.