Home / 21,188.43-29,238.57-11,756.25

Finding the Fourth Proportional to 21,188.43, 29,238.57 and 11,756.25

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Solution

The fourth proportional to 21,188.43, 29,238.57 and 11,756.25 is: 16,222.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.43 : 29,238.57 = 11,756.25 : x
  2. Step 2: Convert to fraction form
    21,188.43/29,238.57 = 11,756.25/x
  3. Step 3: Cross multiply
    21,188.43x = 29,238.57 × 11,756.25
  4. Step 4: Simplify right side
    21,188.43x = 343,735,938.56
  5. Step 5: Solve for x
    x = 343,735,938.56/21,188.43
  6. Step 6: Final answer
    x = 16,222.81

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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.