Home / 21,353.90-29,468.84-11,922.48

Finding the Fourth Proportional to 21,353.90, 29,468.84 and 11,922.48

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Solution

The fourth proportional to 21,353.90, 29,468.84 and 11,922.48 is: 16,453.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.90 : 29,468.84 = 11,922.48 : x
  2. Step 2: Convert to fraction form
    21,353.90/29,468.84 = 11,922.48/x
  3. Step 3: Cross multiply
    21,353.90x = 29,468.84 × 11,922.48
  4. Step 4: Simplify right side
    21,353.90x = 351,341,595.91
  5. Step 5: Solve for x
    x = 351,341,595.91/21,353.90
  6. Step 6: Final answer
    x = 16,453.28

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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.