Home / 21,281.29-29,367.84-11,722.09

Finding the Fourth Proportional to 21,281.29, 29,367.84 and 11,722.09

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Solution

The fourth proportional to 21,281.29, 29,367.84 and 11,722.09 is: 16,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.29 : 29,367.84 = 11,722.09 : x
  2. Step 2: Convert to fraction form
    21,281.29/29,367.84 = 11,722.09/x
  3. Step 3: Cross multiply
    21,281.29x = 29,367.84 × 11,722.09
  4. Step 4: Simplify right side
    21,281.29x = 344,252,538.82
  5. Step 5: Solve for x
    x = 344,252,538.82/21,281.29
  6. Step 6: Final answer
    x = 16,176.30

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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.