Home / 21,329.75-29,435.85-11,900.13

Finding the Fourth Proportional to 21,329.75, 29,435.85 and 11,900.13

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Solution

The fourth proportional to 21,329.75, 29,435.85 and 11,900.13 is: 16,422.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.75 : 29,435.85 = 11,900.13 : x
  2. Step 2: Convert to fraction form
    21,329.75/29,435.85 = 11,900.13/x
  3. Step 3: Cross multiply
    21,329.75x = 29,435.85 × 11,900.13
  4. Step 4: Simplify right side
    21,329.75x = 350,290,441.66
  5. Step 5: Solve for x
    x = 350,290,441.66/21,329.75
  6. Step 6: Final answer
    x = 16,422.63

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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.