Home / 21,308.45-29,402.21-12,354.21

Finding the Fourth Proportional to 21,308.45, 29,402.21 and 12,354.21

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Solution

The fourth proportional to 21,308.45, 29,402.21 and 12,354.21 is: 17,046.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.45 : 29,402.21 = 12,354.21 : x
  2. Step 2: Convert to fraction form
    21,308.45/29,402.21 = 12,354.21/x
  3. Step 3: Cross multiply
    21,308.45x = 29,402.21 × 12,354.21
  4. Step 4: Simplify right side
    21,308.45x = 363,241,107.69
  5. Step 5: Solve for x
    x = 363,241,107.69/21,308.45
  6. Step 6: Final answer
    x = 17,046.81

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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.