Home / 21,394.80-29,522.21-11,833.36

Finding the Fourth Proportional to 21,394.80, 29,522.21 and 11,833.36

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Solution

The fourth proportional to 21,394.80, 29,522.21 and 11,833.36 is: 16,328.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,394.80 : 29,522.21 = 11,833.36 : x
  2. Step 2: Convert to fraction form
    21,394.80/29,522.21 = 11,833.36/x
  3. Step 3: Cross multiply
    21,394.80x = 29,522.21 × 11,833.36
  4. Step 4: Simplify right side
    21,394.80x = 349,346,805.95
  5. Step 5: Solve for x
    x = 349,346,805.95/21,394.80
  6. Step 6: Final answer
    x = 16,328.58

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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.