Home / 21,340.91-29,450.48-11,909.47

Finding the Fourth Proportional to 21,340.91, 29,450.48 and 11,909.47

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Solution

The fourth proportional to 21,340.91, 29,450.48 and 11,909.47 is: 16,435.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.91 : 29,450.48 = 11,909.47 : x
  2. Step 2: Convert to fraction form
    21,340.91/29,450.48 = 11,909.47/x
  3. Step 3: Cross multiply
    21,340.91x = 29,450.48 × 11,909.47
  4. Step 4: Simplify right side
    21,340.91x = 350,739,608.05
  5. Step 5: Solve for x
    x = 350,739,608.05/21,340.91
  6. Step 6: Final answer
    x = 16,435.08

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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.