Home / 21,110.76-29,133.27-11,679.93

Finding the Fourth Proportional to 21,110.76, 29,133.27 and 11,679.93

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Solution

The fourth proportional to 21,110.76, 29,133.27 and 11,679.93 is: 16,118.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.76 : 29,133.27 = 11,679.93 : x
  2. Step 2: Convert to fraction form
    21,110.76/29,133.27 = 11,679.93/x
  3. Step 3: Cross multiply
    21,110.76x = 29,133.27 × 11,679.93
  4. Step 4: Simplify right side
    21,110.76x = 340,274,554.27
  5. Step 5: Solve for x
    x = 340,274,554.27/21,110.76
  6. Step 6: Final answer
    x = 16,118.54

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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.