Home / 21,398.07-29,529.97-11,708.11

Finding the Fourth Proportional to 21,398.07, 29,529.97 and 11,708.11

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Solution

The fourth proportional to 21,398.07, 29,529.97 and 11,708.11 is: 16,157.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,398.07 : 29,529.97 = 11,708.11 : x
  2. Step 2: Convert to fraction form
    21,398.07/29,529.97 = 11,708.11/x
  3. Step 3: Cross multiply
    21,398.07x = 29,529.97 × 11,708.11
  4. Step 4: Simplify right side
    21,398.07x = 345,740,144.70
  5. Step 5: Solve for x
    x = 345,740,144.70/21,398.07
  6. Step 6: Final answer
    x = 16,157.54

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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.