Home / 21,187.72-29,238.96-11,756.26

Finding the Fourth Proportional to 21,187.72, 29,238.96 and 11,756.26

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Solution

The fourth proportional to 21,187.72, 29,238.96 and 11,756.26 is: 16,223.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.72 : 29,238.96 = 11,756.26 : x
  2. Step 2: Convert to fraction form
    21,187.72/29,238.96 = 11,756.26/x
  3. Step 3: Cross multiply
    21,187.72x = 29,238.96 × 11,756.26
  4. Step 4: Simplify right side
    21,187.72x = 343,740,815.89
  5. Step 5: Solve for x
    x = 343,740,815.89/21,187.72
  6. Step 6: Final answer
    x = 16,223.59

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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.