Home / 21,709.01-29,964.33-12,759.39

Finding the Fourth Proportional to 21,709.01, 29,964.33 and 12,759.39

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Solution

The fourth proportional to 21,709.01, 29,964.33 and 12,759.39 is: 17,611.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,709.01 : 29,964.33 = 12,759.39 : x
  2. Step 2: Convert to fraction form
    21,709.01/29,964.33 = 12,759.39/x
  3. Step 3: Cross multiply
    21,709.01x = 29,964.33 × 12,759.39
  4. Step 4: Simplify right side
    21,709.01x = 382,326,572.56
  5. Step 5: Solve for x
    x = 382,326,572.56/21,709.01
  6. Step 6: Final answer
    x = 17,611.42

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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.